Updated: August 2026
Colors displayed on screen can vary based on your monitor calibration, color space settings (sRGB, Display P3, Adobe RGB), brightness levels, hardware display technology (OLED, IPS, TN), and operating system color management. Hex codes and RGB values represent exact mathematical targets, but physical perception may differ across devices.
Our Contrast Checker uses the standard WCAG 2.1 relative luminance formula to calculate contrast ratios. While this provides standard mathematical guidance for WCAG AA (4.5:1 / 3:1) and AAA (7:1 / 4.5:1) compliance, final accessibility validation for mission-critical digital products should include human testing with screen readers and target audience user groups.
Brand colors and trademark names listed in our Brand Color Library belong to their respective corporate owners. Reference to brand names is for educational and identification purposes only and does not imply official endorsement or affiliation.