Color tools that work in your browser — nothing uploaded, nothing stored.
Convert, generate, check, and simulate color — seven free tools, all running as client-side JavaScript. Your images and colors never leave your device.
Color Converter
Paste any hex, RGB, HSL, or CMYK value and get every other format instantly, plus the nearest named color.
GeneratePalette Generator
Build monochromatic, complementary, triadic, or analogous palettes from one base color. Export as CSS or Tailwind variables.
CheckContrast Checker
Test any foreground/background pair against WCAG AA and AAA thresholds for normal and large text, with a live preview.
GenerateGradient Generator
Build linear or radial CSS gradients with draggable color stops and copy the exact CSS to use.
ExtractImage Color Extractor
Upload a photo or screenshot and pull its dominant colors, ranked by prevalence, as a copyable palette.
SimulateColor Blindness Simulator
See how a color or an uploaded image looks under protanopia, deuteranopia, or tritanopia.
MixColor Mixer
Blend two colors at any ratio and see the resulting hex, RGB, and HSL values update live.
Reference guides
Researched, sourced background reading behind the tools above.
WCAG Contrast Requirements Explained
The exact AA/AAA thresholds, what counts as "large text," and worked pass/fail examples.
GuideColor Space Reference: RGB vs HSL vs CMYK
The real formulas behind each conversion and when to use which space.
GuideColor Blindness Types & Prevalence
Sourced prevalence data by type and gender, and what each type actually looks like.
GuideAccessible Color Pairing Guide
Common failing color combinations and the specific fix for each.