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Design Tools & Web Color Accessibility Guides
Guides on digital color mathematics, CSS design tokens, and web accessibility standards. Learn how to convert between HEX, RGB, HSL, and OKLCH color spaces, verify WCAG 2.2 contrast compliance, and build dynamic dark-mode interfaces.
WCAG 2.2 Standards
Accessible color contrast verification for inclusive UI design.
Modern Color Spaces
Perceptually uniform palettes with OKLCH, HSL, and RGB.
Zero Data Latency
Client-side color picking and conversion calculations.
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Design Articles (7)
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Dark Mode Color Contrast: How to Meet WCAG 2.2 AA Standards Without Washing Out Your UI Palette
Learn how to build accessible dark-mode web interfaces. Understand WCAG 2.2 contrast ratios, avoiding pure black backgrounds, and desaturating accent colors.
Oct 29, 2026 · 8 min read
HEX to RGB and HSL: How Digital Color Codes Work Under the Hood with Conversion Formulas
Understand digital color models. Learn how HEX hexadecimal notation maps to decimal RGB, how HSL cylindrical coordinates work, and exact mathematical conversion formulas.
Oct 20, 2026 · 8 min read
OKLCH vs HSL in CSS: Why Perceptually Uniform Colors Are Replacing Traditional Web Palettes
Build accessible, consistent color systems in CSS. Understand why OKLCH fixes HSL brightness distortions and enables wide-gamut Display P3 web palettes.
Sep 22, 2026 · 8 min read
Web Accessibility Color Contrast: WCAG 2.2 Ratios, APCA Readability, and Compliant UI Design
Design compliant, high-readability web interfaces. Learn WCAG 2.2 contrast thresholds, the mathematical formula behind relative luminance, and the APCA standard.
Sep 22, 2026 · 9 min read
Frequently Asked Questions About Design
What is the difference between HSL and OKLCH in web design?
OKLCH is perceptually uniform across hues, meaning colors with identical lightness values appear equally bright to the human eye, avoiding the uneven brightness artifacts of standard HSL.
What contrast ratio is required for WCAG AA compliance?
WCAG 2.2 Level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (18pt or 14pt bold) and user interface components.