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Colorbook
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Color Information

Blue

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

HEX Format
#121799
RGB Values
18, 23, 153
HSL Values
238°, 79%, 34%
CMYK Values
88%, 85%, 0%, 40%

Color Variations & Tints

  • #1A21E0

    Lightness: 49%

  • #181DC9

    Lightness: 44%

  • #151AB2

    Lightness: 39%

  • #121799

    Lightness: 34%

    Current color

  • #101384

    Lightness: 29%

  • #0D106E

    Lightness: 24%

  • #0A0D57

    Lightness: 19%

Accessibility

White Text
13.1
PASS
Black Text
1.6
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 #121799

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

Current: #121799

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