/
Colorbook
Sign in Sign up

Color Information

Black

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#28735E
RGB Values
40, 115, 94
HSL Values
163°, 48%, 30%
CMYK Values
65%, 0%, 18%, 55%

Color Variations & Tints

  • #3CAA8B

    Lightness: 45%

  • #35977B

    Lightness: 40%

  • #2E846C

    Lightness: 35%

  • #28735E

    Lightness: 30%

    Current color

  • #215E4D

    Lightness: 25%

  • #1B4B3E

    Lightness: 20%

  • #14392E

    Lightness: 15%

Accessibility

White Text
5.7
PASS
Black Text
3.7
FAIL
WCAG AA
PASS
WCAG AAA
FAIL

Accessibility Guide

Contrast Ratios
Higher values (4.5+) ensure better readability for users with visual impairments.
WCAG AA Standard
Minimum requirement: 4.5:1 contrast for normal text, 3:1 for large text.
WCAG AAA Standard
Enhanced level: 7:1 contrast for normal text, 4.5:1 for large text.

Color Harmonies

  • Complementary

    Colors opposite on the color wheel, creating high contrast

  • Triadic

    Three evenly spaced colors forming a triangle on the color wheel

  • Analogous

    Adjacent colors on the color wheel, creating harmony and unity

Be picky and fine tune your color: colors very near to #28735E

Systematic progression of extremely similar colors. Each color represents a precise step in lightness variation.

Current: #28735E

Discover More Colors

Explore a randomly curated selection of colors. Each refresh brings new inspiration for your palette.