/
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
#42577B
RGB Values
66, 87, 123
HSL Values
218°, 30%, 37%
CMYK Values
46%, 29%, 0%, 52%

Color Variations & Tints

  • #607BA9

    Lightness: 52%

  • #546E9C

    Lightness: 47%

  • #4B638B

    Lightness: 42%

  • #42577B

    Lightness: 37%

    Current color

  • #394B6A

    Lightness: 32%

  • #303F5A

    Lightness: 27%

  • #273449

    Lightness: 22%

Accessibility

White Text
7.3
PASS
Black Text
2.9
FAIL
WCAG AA
PASS
WCAG AAA
PASS

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 #42577B

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

Current: #42577B

Discover More Colors

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