{"id":14,"date":"2025-10-15T14:00:54","date_gmt":"2025-10-15T14:00:54","guid":{"rendered":"https:\/\/federdopolio.com\/?p=14"},"modified":"2026-10-02T04:53:53","modified_gmt":"2026-10-02T04:53:53","slug":"color-palette-generator-free-online-color-tool-esdsoftware","status":"publish","type":"post","link":"https:\/\/federdopolio.com\/?p=14","title":{"rendered":"Color Palette Generator | Free Online Color Tool \u2013 ESDSoftware"},"content":{"rendered":"<p>&nbsp;<\/p>\n<div id=\"esd-palgen-wrap\" style=\"font-family: system-ui; max-width: 980px; margin: 0 auto; padding: 20px; background: #fff; color: #0f172a;\">\n<h1 style=\"color: #06b6d4; font-size: 1.9rem; text-align: center; margin: 0 0 10px;\">Color Palette Generator<\/h1>\n<p style=\"margin: 0 0 18px; line-height: 1.6;\">Generate beautiful, consistent color palettes directly in your browser \u2014 no tracking, no uploads, fully client-side. This ESDSoftware tool lets you pick a base color and instantly create harmonious palettes (Analogous, Complementary, Triadic, Tetradic, or Monochrome). Each swatch shows HEX values you can copy in one click, with options to lock colors, randomize, and export your palette to JSON or CSV for design tokens, CSS variables, or brand systems. Fast, lightweight, and privacy-first for designers and developers alike.<\/p>\n<div id=\"esd-palgen-grid\" style=\"display: flex; flex-wrap: wrap; gap: 16px;\">\n<div id=\"esd-palgen-box\" style=\"flex: 1 1 360px; background: #ecfeff; border: 1px solid #bae6fd; border-radius: 12px; box-shadow: 0 2px 6px rgba(0,0,0,.06); padding: 16px; min-width: 300px;\">\n<div style=\"display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end;\">\n<div style=\"flex: 1 1 150px;\"><label style=\"display: block; font-weight: bold; color: #0284c7; margin: 0 0 6px;\" for=\"esd-palgen-base\">Base Color<\/label><input id=\"esd-palgen-base\" style=\"width: 100%; height: 44px; border: 1px solid #bae6fd; border-radius: 8px; background: #fff; appearance: none; padding: 0;\" type=\"color\" value=\"#06b6d4\" \/><\/div>\n<div style=\"flex: 1 1 190px;\"><label style=\"display: block; font-weight: bold; color: #0284c7; margin: 0 0 6px;\" for=\"esd-palgen-hex\">HEX<\/label><input id=\"esd-palgen-hex\" style=\"width: 100%; padding: 10px; border: 1px solid #bae6fd; border-radius: 8px; outline: none;\" autocomplete=\"off\" type=\"text\" placeholder=\"#06B6D4\" \/><\/div>\n<\/div>\n<div style=\"display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px;\">\n<div style=\"flex: 1 1 200px;\"><label style=\"display: block; font-weight: bold; color: #0284c7; margin: 0 0 6px;\" for=\"esd-palgen-scheme\">Scheme<\/label><select id=\"esd-palgen-scheme\" style=\"width: 100%; padding: 10px; border: 1px solid #bae6fd; border-radius: 8px; outline: none;\"><option>Analogous<\/option><option>Complementary<\/option><option>Triadic<\/option><option>Tetradic<\/option><option>Monochrome<\/option><\/select><\/div>\n<div style=\"flex: 1 1 140px;\"><label style=\"display: block; font-weight: bold; color: #0284c7; margin: 0 0 6px;\" for=\"esd-palgen-count\">Colors<\/label><input id=\"esd-palgen-count\" style=\"width: 100%; padding: 10px; border: 1px solid #bae6fd; border-radius: 8px; outline: none;\" max=\"8\" min=\"3\" type=\"number\" value=\"5\" \/><\/div>\n<\/div>\n<div style=\"display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px;\"><button id=\"esd-palgen-generate\" style=\"background: #06b6d4; color: #fff; border: none; border-radius: 8px; padding: 10px 16px; font-weight: bold; cursor: pointer; transition:.2s;\">Generate<\/button><button id=\"esd-palgen-random\" style=\"background: #06b6d4; color: #fff; border: none; border-radius: 8px; padding: 10px 16px; font-weight: bold; cursor: pointer; transition:.2s;\">Randomize<\/button><button id=\"esd-palgen-copyall\" style=\"background: #f1f5f9; color: #0f172a; border: none; border-radius: 8px; padding: 10px 16px; font-weight: bold; cursor: pointer; transition:.2s;\">Copy All HEX<\/button><button id=\"esd-palgen-clear\" style=\"background: #f1f5f9; color: #0f172a; border: none; border-radius: 8px; padding: 10px 16px; font-weight: bold; cursor: pointer; transition:.2s;\">Clear<\/button><\/div>\n<div id=\"esd-palgen-swatches\" style=\"display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 12px; margin-top: 14px;\"><\/div>\n<div style=\"margin-top: 14px;\">\n<p><label style=\"display: block; font-weight: bold; color: #0284c7; margin: 0 0 6px;\" for=\"esd-palgen-export\">Export (JSON \/ CSV)<\/label><textarea id=\"esd-palgen-export\" style=\"width: 100%; height: 90px; padding: 10px; border: 1px solid #bae6fd; border-radius: 8px; font-family: monospace; resize: vertical;\"><\/textarea><\/p>\n<div style=\"display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px;\"><button id=\"esd-palgen-export-json\" style=\"background: #f1f5f9; color: #0f172a; border: none; border-radius: 8px; padding: 8px 12px; font-weight: bold; cursor: pointer; transition:.2s;\">Export JSON<\/button><button id=\"esd-palgen-export-csv\" style=\"background: #f1f5f9; color: #0f172a; border: none; border-radius: 8px; padding: 8px 12px; font-weight: bold; cursor: pointer; transition:.2s;\">Export CSV<\/button><button id=\"esd-palgen-copy-export\" style=\"background: #f1f5f9; color: #0f172a; border: none; border-radius: 8px; padding: 8px 12px; font-weight: bold; cursor: pointer; transition:.2s;\">Copy Export<\/button><\/div>\n<\/div>\n<div id=\"esd-palgen-status\" style=\"margin-top: 8px; color: #0284c7; min-height: 1.2em; font-weight: 600;\" role=\"status\" aria-live=\"polite\"><\/div>\n<\/div>\n<div id=\"esd-palgen-info\" style=\"flex: 1 1 360px; min-width: 300px;\">\n<h2 style=\"color: #06b6d4; margin: 6px 0 8px; font-size: 1.1rem;\">How to Use<\/h2>\n<ol style=\"margin: 0 0 14px 18px; line-height: 1.7;\">\n<li>Pick a base color or paste a HEX, choose a scheme and the number of colors.<\/li>\n<li>Click <b>Generate<\/b> to build your palette. Lock any swatch you like, then hit <b>Randomize<\/b> to refresh the unlocked ones.<\/li>\n<li>Copy any HEX (or all at once), and export the palette as JSON or CSV for design tokens.<\/li>\n<li>Use <b>Clear<\/b> to reset fields and start a new set.<\/li>\n<\/ol>\n<h2 style=\"color: #06b6d4; margin: 10px 0 8px; font-size: 1.1rem;\">FAQ<\/h2>\n<h3 style=\"color: #06b6d4; margin: 8px 0 4px; font-size: 1rem;\">Is this accurate for print?<\/h3>\n<p style=\"margin: 0 0 8px; line-height: 1.6;\">This generator targets sRGB for screen. Print results vary by ink, stock, and lighting.<\/p>\n<h3 style=\"color: #06b6d4; margin: 8px 0 4px; font-size: 1rem;\">Is any data uploaded?<\/h3>\n<p style=\"margin: 0 0 8px; line-height: 1.6;\">No \u2014 everything runs locally in your browser. Your palettes never leave your device.<\/p>\n<h3 style=\"color: #06b6d4; margin: 8px 0 4px; font-size: 1rem;\">How big can inputs be?<\/h3>\n<p style=\"margin: 0; line-height: 1.6;\">Inputs are capped at ~1 MB via TextEncoder for safety and performance.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><script>(()=>{\"use strict\";const $=id=>document.getElementById(id),base=$(\"esd-palgen-base\"),hex=$(\"esd-palgen-hex\"),scheme=$(\"esd-palgen-scheme\"),count=$(\"esd-palgen-count\"),gen=$(\"esd-palgen-generate\"),rand=$(\"esd-palgen-random\"),copyAll=$(\"esd-palgen-copyall\"),clr=$(\"esd-palgen-clear\"),wrap=$(\"esd-palgen-swatches\"),status=$(\"esd-palgen-status\"),expBox=$(\"esd-palgen-export\"),exJSON=$(\"esd-palgen-export-json\"),exCSV=$(\"esd-palgen-export-csv\"),copyExport=$(\"esd-palgen-copy-export\");function setStatus(m){status.textContent=m||\"\"}function withinLimit(){try{return new TextEncoder().encode((hex.value+\" \"+scheme.value+\" \"+count.value).trim()).length<=1e6}catch{return false}}function clamp(n,min,max){return Math.min(Math.max(n,min),max)}function toHex(n){const s=n.toString(16).toUpperCase();return s.length===1?\"0\"+s:s}function rgbToHex(r,g,b){return\"#\"+toHex(r)+toHex(g)+toHex(b)}function hexToRgb(h){const m=\/^#?([0-9A-F]{6})$\/i.exec(h);if(!m)return null;const v=m[1];return{r:parseInt(v.slice(0,2),16),g:parseInt(v.slice(2,4),16),b:parseInt(v.slice(4,6),16)}}function normHex(h){let s=h.trim();if(!s)return\"\";if(s[0]!==\"#\")s=\"#\"+s;return\/^#([0-9A-F]{6})$\/i.test(s)?s.toUpperCase():\"\"}function rgbToHsl(R,G,B){const r=R\/255,g=G\/255,b=B\/255,max=Math.max(r,g,b),min=Math.min(r,g,b);let h=0,s=0;const l=(max+min)\/2;const d=max-min;if(d){s=l>0.5?d\/(2-max-min):d\/(max+min);switch(max){case r:h=(g-b)\/d+(g<b?6:0);break;case g:h=(b-r)\/d+2;break;default:h=(r-g)\/d+4}h=h*60}return{h:h,s:s*100,l:l*100}}function hslToRgb(h,s,l){h=((h%360)+360)%360;s=clamp(s,0,100)\/100;l=clamp(l,0,100)\/100;if(s===0){const v=Math.round(l*255);return{r:v,g:v,b:v}}const q=l<0.5?l*(1+s):l+s-l*s;const p=2*l-q;const hk=h\/360;const hue=t=>{if(t<0)t+=1;if(t>1)t-=1;if(t<1\/6)return p+(q-p)*6*t;if(t<1\/2)return q;if(t<2\/3)return p+(q-p)*(2\/3-t)*6;return p};return{r:Math.round(hue(hk+1\/3)*255),g:Math.round(hue(hk)*255),b:Math.round(hue(hk-1\/3)*255)}}function vary(x,amount,min,max){return clamp(x+amount,min,max)}function genAnalogous(h,s,l,n){const step=30\/(n>1?n-1:1);const start=h-15*(n-1);const arr=[];for(let i=0;i<n;i++){arr.push({h:start+i*step*2,s,l})}return arr}function genComplementary(h,s,l,n){const arr=[];const hues=[h,(h+180)%360];for(let i=0;i<n;i++){const base=hues[i%2];const tweak=((i\/Math.max(1,n-1))-0.5)*20;arr.push({h:base,s:vary(s,tweak,-0,100),l:vary(l,tweak,-0,100)})}return arr}function genTriadic(h,s,l,n){const tri=[h,(h+120)%360,(h+240)%360];const arr=[];for(let i=0;i<n;i++){arr.push({h:tri[i%3],s,l})}return arr}function genTetradic(h,s,l,n){const tet=[h,(h+90)%360,(h+180)%360,(h+270)%360];const arr=[];for(let i=0;i<n;i++){arr.push({h:tet[i%4],s,l})}return arr}function genMonochrome(h,s,l,n){const arr=[];const span=40;const start=l-span\/2;for(let i=0;i<n;i++){arr.push({h,s,l:clamp(start+(span*(i\/(n-1||1))),0,100)})}return arr}function schemeHSL(hsl,n,mode){const h=hsl.h,s=hsl.s,l=hsl.l;switch(mode){case\"Analogous\":return genAnalogous(h,s,l,n);case\"Complementary\":return genComplementary(h,s,l,n);case\"Triadic\":return genTriadic(h,s,l,n);case\"Tetradic\":return genTetradic(h,s,l,n);default:return genMonochrome(h,s,l,n)}}let locks=[];function swatchCard(hx,idx){const card=document.createElement(\"div\");card.style.cssText=\"background:#fff;border:1px solid #bae6fd;border-radius:12px;box-shadow:0 2px 6px rgba(0,0,0,.05);padding:10px;display:flex;flex-direction:column;gap:8px;min-width:0\";const block=document.createElement(\"div\");block.style.cssText=\"height:80px;border-radius:10px;border:1px solid #bae6fd;box-shadow:inset 0 0 0 1px rgba(0,0,0,.05)\";block.style.background= hx;const row=document.createElement(\"div\");row.style.cssText=\"display:flex;gap:8px;align-items:center\";const input=document.createElement(\"input\");input.value=hx;input.readOnly=true;input.style.cssText=\"flex:1 1 auto;padding:8px;border:1px solid #bae6fd;border-radius:8px;background:#fff;outline:none\";const copy=document.createElement(\"button\");copy.textContent=\"Copy\";copy.style.cssText=\"background:#f1f5f9;color:#0f172a;border:none;border-radius:8px;padding:8px 12px;font-weight:700;cursor:pointer;transition:.2s\";const lock=document.createElement(\"button\");lock.textContent=locks[idx]?\"Locked\":\"Lock\";lock.style.cssText=\"background:#f1f5f9;color:#0f172a;border:none;border-radius:8px;padding:8px 12px;font-weight:700;cursor:pointer;transition:.2s\";copy.addEventListener(\"click\",()=>{input.select();document.execCommand(\"copy\");setStatus(\"\ud83d\udccb Copied \"+input.value)});lock.addEventListener(\"click\",()=>{locks[idx]=!locks[idx];lock.textContent=locks[idx]?\"Locked\":\"Lock\";setStatus(locks[idx]?\"\ud83d\udd12 Swatch locked\":\"\ud83d\udd13 Swatch unlocked\")});[copy,lock].forEach(el=>{el.addEventListener(\"keydown\",e=>{if(e.key===\"Enter\"||e.key===\" \"){e.preventDefault();el.click()}});el.addEventListener(\"focus\",()=>{el.style.outline=\"2px solid #93c5fd\"});el.addEventListener(\"blur\",()=>{el.style.outline=\"none\"});el.addEventListener(\"mouseover\",()=>{el.style.background=\"#e2e8f0\"});el.addEventListener(\"mouseout\",()=>{el.style.background=\"#f1f5f9\"})});row.appendChild(input);row.appendChild(copy);row.appendChild(lock);card.appendChild(block);card.appendChild(row);return{card,update:(h)=>{block.style.background=h;input.value=h}}}function buildGrid(cols){wrap.style.gridTemplateColumns=\"repeat(\"+cols+\",minmax(0,1fr))\"}function randomHex(){const r=()=>toHex(Math.floor(Math.random()*256));return\"#\"+r()+r()+r()}function applyBase(hx){base.value=hx;hex.value=hx}function computePalette(){if(!withinLimit()){setStatus(\"\u26a0\ufe0f Input too large (max 1MB).\");return[]}let hx=normHex(hex.value)||base.value;const rgb=hexToRgb(hx);if(!rgb){setStatus(\"\u274c Enter a valid HEX like #RRGGBB.\");return[]}const hsl=rgbToHsl(rgb.r,rgb.g,rgb.b);const n=clamp(parseInt(count.value||\"5\",10),3,8);count.value=String(n);buildGrid(n);const hsls=schemeHSL(hsl,n,scheme.value);const out=hsls.map(x=>{const r=hslToRgb(x.h,x.s,x.l);return rgbToHex(r.r,r.g,r.b)});return out}let cards=[];function renderPalette(){const cols=clamp(parseInt(count.value||\"5\",10),3,8);if(locks.length!==cols){const old=locks.slice(0);locks=new Array(cols).fill(false);for(let i=0;i<Math.min(old.length,locks.length);i++)locks[i]=old[i]}const palette=computePalette();if(palette.length===0)return;wrap.textContent=\"\";cards=[];palette.forEach((hx,idx)=>{const c=swatchCard(hx,idx);wrap.appendChild(c.card);cards.push(c)});setStatus(\"\u2705 Palette generated.\")}function randomize(){const cols=clamp(parseInt(count.value||\"5\",10),3,8);const current=cards.length===cols?cards.map(c=>c?c:null):[];let baseHex=normHex(hex.value)||base.value;let h=rgbToHsl(...Object.values(hexToRgb(baseHex)));const newBase=randomHex();if(!locks.some(Boolean)){applyBase(newBase)}const palette=computePalette();if(palette.length===0)return;palette.forEach((hx,idx)=>{if(locks[idx]&&cards[idx])return;cards[idx].update(hx)});setStatus(\"\ud83c\udfb2 Randomized unlocked swatches.\")}function copyAllHex(){const vals=cards.map(c=>c?c.card.querySelector(\"input\").value:\"\").filter(Boolean);const tmp=document.createElement(\"textarea\");tmp.value=vals.join(\", \");document.body.appendChild(tmp);tmp.select();document.execCommand(\"copy\");document.body.removeChild(tmp);setStatus(\"\ud83d\udccb Copied \"+vals.length+\" HEX values.\")}function exportJSON(){const vals=cards.map(c=>c.card.querySelector(\"input\").value);expBox.value=JSON.stringify(vals);setStatus(\"\u2705 JSON ready.\")}function exportCSV(){const vals=cards.map(c=>c.card.querySelector(\"input\").value);expBox.value=vals.join(\"n\");setStatus(\"\u2705 CSV ready.\")}function copyExportText(){expBox.select();document.execCommand(\"copy\");setStatus(\"\ud83d\udccb Export copied.\")}gen.addEventListener(\"click\",renderPalette);rand.addEventListener(\"click\",randomize);copyAll.addEventListener(\"click\",copyAllHex);clr.addEventListener(\"click\",()=>{hex.value=\"\";scheme.value=\"Analogous\";count.value=\"5\";locks=[];renderPalette();setStatus(\"\u2705 Cleared.\")});exJSON.addEventListener(\"click\",exportJSON);exCSV.addEventListener(\"click\",exportCSV);copyExport.addEventListener(\"click\",copyExportText);[gen,rand,copyAll,clr,exJSON,exCSV,copyExport].forEach(el=>{el.addEventListener(\"keydown\",e=>{if(e.key===\"Enter\"||e.key===\" \"){e.preventDefault();el.click()}});el.addEventListener(\"focus\",()=>{el.style.outline=\"2px solid #93c5fd\"});el.addEventListener(\"blur\",()=>{el.style.outline=\"none\"});el.addEventListener(\"mouseover\",()=>{el.style.background=(el===gen||el===rand)?\"#0891b2\":\"#e2e8f0\"});el.addEventListener(\"mouseout\",()=>{el.style.background=(el===gen||el===rand)?\"#06b6d4\":\"#f1f5f9\"})});[hex,scheme,count].forEach(el=>{el.addEventListener(\"keydown\",e=>{if(e.key===\"Enter\"){e.preventDefault();renderPalette()}})});base.addEventListener(\"input\",()=>{applyBase(base.value)});hex.addEventListener(\"input\",()=>{const v=normHex(hex.value);if(v)base.value=v});renderPalette();})();<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Color Palette Generator Generate beautiful, consistent color palettes directly in your browser \u2014 no tracking, no uploads, fully client-side. This ESDSoftware tool lets you pick a base color and instantly create harmonious palettes (Analogous, Complementary, Triadic, Tetradic, or Monochrome). Each swatch shows HEX values you can copy in one click, with options to lock [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[68,71,3,4,72,73,76,69,2,25,75,74,5,70],"class_list":["post-14","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-ava-spectrum","tag-brand-palette","tag-browser-based","tag-client-side","tag-color-palette-generator","tag-color-palette-maker","tag-color-scheme","tag-color-tools","tag-esdsoftware","tag-fast","tag-free-online-color-tool","tag-palette-generator-online","tag-privacy-first","tag-ui-design"],"_links":{"self":[{"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/posts\/14","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/federdopolio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14"}],"version-history":[{"count":1,"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/posts\/14\/revisions"}],"predecessor-version":[{"id":17,"href":"https:\/\/federdopolio.com\/index.php?rest_route=\/wp\/v2\/posts\/14\/revisions\/17"}],"wp:attachment":[{"href":"https:\/\/federdopolio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/federdopolio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/federdopolio.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}