The Color
Laboratory.
Professional color utilities built for designers and developers. Pick, convert, and generate color systems with browser-native precision — no account, no server, no limits.
The Suite
Five precision tools
100% local · zero latency
Color Picker
Precision selection with synchronized HEX, RGB, and HSL outputs. Live gradient canvas with crosshair targeting.
Palette Generator
Create harmonious schemes from color theory — complementary, triadic, analogous, and monochromatic.
Contrast Checker
Verify WCAG 2.1 compliance for text–background pairs. Instant AA and AAA pass/fail scores.
Gradient Generator
Build multi-stop CSS gradients with live preview. Export the full CSS string in one click.
Color Converter
Instantly convert between HEX, RGB, HSL, and CMYK. Batch output all formats at once.
Full Spectrum
The Professional Choice for Color Management
In the modern web landscape, color isn't just about aesthetics — it's about accessibility, brand identity, and user psychology. Our suite of free online color tools is engineered to provide design-system-grade precision without the bloat of traditional software.
Whether you're debugging CSS variables, building a component library, or fine-tuning accessibility for WCAG compliance, these utilities provide the accuracy you need. Every calculation runs client-side, ensuring instantaneous performance and absolute privacy.
Real-time Sync
All formats update instantly as you adjust values, eliminating manual recalculations.
Browser-Native
Leverages modern web APIs for a lightweight, zero-latency experience on any device.
WCAG Precision
Contrast ratios computed with the exact sRGB luminance formula used in WCAG 2.1.
Color Theory
Palette generation uses established harmonic relationships: complementary, triadic, and analogous.