/
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
#37387D
RGB Values
55, 56, 125
HSL Values
239°, 39%, 35%
CMYK Values
56%, 55%, 0%, 51%

Color Variations & Tints

  • #4E4FB1

    Lightness: 50%

  • #4647A0

    Lightness: 45%

  • #3E408E

    Lightness: 40%

  • #37387D

    Lightness: 35%

    Current color

  • #2F306A

    Lightness: 30%

  • #272859

    Lightness: 25%

  • #1F2047

    Lightness: 20%

Accessibility

White Text
10.4
PASS
Black Text
2.0
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 #37387D

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

Current: #37387D

Discover More Colors

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