/
Colorbook
Sign in Sign up

Color Information

Blue

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

HEX Format
#311B59
RGB Values
49, 27, 89
HSL Values
261°, 53%, 23%
CMYK Values
45%, 70%, 0%, 65%

Color Variations & Tints

  • #512E94

    Lightness: 38%

  • #472881

    Lightness: 33%

  • #3C226D

    Lightness: 28%

  • #311B59

    Lightness: 23%

    Current color

  • #271646

    Lightness: 18%

  • #1C1033

    Lightness: 13%

  • #110A1F

    Lightness: 8%

Accessibility

White Text
14.7
PASS
Black Text
1.4
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 #311B59

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

Current: #311B59

Discover More Colors

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