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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
#818DE4
RGB Values
129, 141, 228
HSL Values
233°, 65%, 70%
CMYK Values
43%, 38%, 0%, 11%

Color Variations & Tints

  • #C0C6F2

    Lightness: 85%

  • #ABB3ED

    Lightness: 80%

  • #969FE9

    Lightness: 75%

  • #818DE4

    Lightness: 70%

    Current color

  • #6C79E0

    Lightness: 65%

  • #5766DB

    Lightness: 60%

  • #4253D7

    Lightness: 55%

Accessibility

White Text
3.1
FAIL
Black Text
6.9
PASS
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 #818DE4

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

Current: #818DE4

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