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April 8, 2021 12:12
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| <!DOCTYPE html> | |
| <meta charset="utf8"> | |
| <style> | |
| html { | |
| font-family: consolas, monospace; | |
| font-size: 16px; | |
| } | |
| ul, li { | |
| padding: 0; | |
| margin: 0; | |
| list-style-type: none; | |
| } | |
| h2 { | |
| margin: 0; | |
| } | |
| body { | |
| display: grid; | |
| grid-template-columns: repeat(2, 1fr); | |
| gap: 1rem; | |
| margin: 1rem; | |
| } | |
| .badges { | |
| display: flex; | |
| flex-wrap: wrap; | |
| gap: 1rem; | |
| margin: 1rem 0 0 0; | |
| } | |
| .badge { | |
| padding: .5rem; | |
| border-radius: 5px; | |
| position: relative; | |
| } | |
| .badge { | |
| --command-menu-badge-color1: #f44336; | |
| --command-menu-badge-color2: #e91e63; | |
| --command-menu-badge-color3: #9c27b0; | |
| --command-menu-badge-color4: #673ab7; | |
| --command-menu-badge-color5: #3f51b5; | |
| --command-menu-badge-color6: #03a9f4; | |
| --command-menu-badge-color7: #00bcd4; | |
| --command-menu-badge-color8: #009688; | |
| --command-menu-badge-color9: #4caf50; | |
| --command-menu-badge-color10: #8bc34a; | |
| --command-menu-badge-color11: #cddc39; | |
| --command-menu-badge-color12: #ffc107; | |
| --command-menu-badge-color13: #ff9800; | |
| --command-menu-badge-color14: #ff5722; | |
| --command-menu-badge-color15: #795548; | |
| --command-menu-badge-color16: #9e9e9e; | |
| --command-menu-badge-color17: #607d8b; | |
| } | |
| .light .badge { | |
| color: white; | |
| --command-menu-badge-color3: #ad4cbe; | |
| --command-menu-badge-color4: #8561c5; | |
| --command-menu-badge-color7: #0078d4; | |
| --command-menu-badge-color9: #328800; | |
| } | |
| .badge.low-contrast::before { | |
| content: attr(data-contrast); | |
| position: absolute; | |
| background: red; | |
| color: white; | |
| font-weight: bold; | |
| border-radius: 2px; | |
| padding: .2rem; | |
| top: -.5rem; | |
| right: -.8rem; | |
| box-shadow: 0 0 1px 0 black; | |
| font-size: .7rem; | |
| } | |
| .container { | |
| padding: 1rem; | |
| border-radius: 5px; | |
| } | |
| .dark { | |
| background: #202124; | |
| } | |
| .dark h2 { | |
| color: white; | |
| } | |
| </style> | |
| <div class="container light"> | |
| <h2>Light theme</h2> | |
| <ul class="badges"> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color1)">Panel</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color2)">Drawer</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color3)">Appearance</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color4)">Console</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color5)">Debugger</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color6)">Elements</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color7)">Global</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color8)">Grid</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color9)">Help</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color10)">Mobile</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color11)">Navigation</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color12)">Network</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color13)">Performance</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color14)">Rendering</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color15)">Resources</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color16)">Screenshot</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color17)">Settings</li> | |
| </ul> | |
| </div> | |
| <div class="container dark"> | |
| <h2>Dark theme</h2> | |
| <ul class="badges"> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color1)">Panel</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color2)">Drawer</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color3)">Appearance</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color4)">Console</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color5)">Debugger</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color6)">Elements</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color7)">Global</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color8)">Grid</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color9)">Help</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color10)">Mobile</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color11)">Navigation</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color12)">Network</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color13)">Performance</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color14)">Rendering</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color15)">Resources</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color16)">Screenshot</li> | |
| <li class="badge" style="background-color:var(--command-menu-badge-color17)">Settings</li> | |
| </ul> | |
| </div> | |
| <script> | |
| function blendColors(fgRGBA, bgRGBA) { | |
| const alpha = fgRGBA[3]; | |
| return [ | |
| ((1 - alpha) * bgRGBA[0]) + (alpha * fgRGBA[0]), | |
| ((1 - alpha) * bgRGBA[1]) + (alpha * fgRGBA[1]), | |
| ((1 - alpha) * bgRGBA[2]) + (alpha * fgRGBA[2]), | |
| alpha + (bgRGBA[3] * (1 - alpha)), | |
| ]; | |
| } | |
| function luminance([rSRGB, gSRGB, bSRGB]) { | |
| const r = rSRGB <= 0.03928 ? rSRGB / 12.92 : Math.pow(((rSRGB + 0.055) / 1.055), 2.4); | |
| const g = gSRGB <= 0.03928 ? gSRGB / 12.92 : Math.pow(((gSRGB + 0.055) / 1.055), 2.4); | |
| const b = bSRGB <= 0.03928 ? bSRGB / 12.92 : Math.pow(((bSRGB + 0.055) / 1.055), 2.4); | |
| return 0.2126 * r + 0.7152 * g + 0.0722 * b; | |
| } | |
| function contrastRatio(fgRGBA, bgRGBA) { | |
| const blendedFg = blendColors(fgRGBA, bgRGBA); | |
| const fgLuminance = luminance(blendedFg); | |
| const bgLuminance = luminance(bgRGBA); | |
| const contrastRatio = (Math.max(fgLuminance, bgLuminance) + 0.05) / (Math.min(fgLuminance, bgLuminance) + 0.05); | |
| return contrastRatio; | |
| } | |
| function rgbToArray(rgb) { | |
| return [...rgb.substring(4).split(',').map(p => parseInt(p, 10) / 255), 1]; | |
| } | |
| setInterval(() => { | |
| document.querySelectorAll('.badge').forEach(badge => { | |
| const style = getComputedStyle(badge); | |
| const f = style.color; | |
| const b = style.backgroundColor; | |
| const ratio = contrastRatio(rgbToArray(f), rgbToArray(b)); | |
| badge.dataset.contrast = ratio.toFixed(2); | |
| badge.classList.toggle('low-contrast', ratio < 4.5); | |
| }); | |
| }, 500); | |
| </script> |
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