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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
#818AF3
RGB Values
129, 138, 243
HSL Values
235°, 83%, 73%
CMYK Values
47%, 43%, 0%, 5%

Color Variations & Tints

  • #C7CBFA

    Lightness: 88%

  • #B0B6F8

    Lightness: 83%

  • #98A0F5

    Lightness: 78%

  • #818AF3

    Lightness: 73%

    Current color

  • #6A75F1

    Lightness: 68%

  • #525FEF

    Lightness: 63%

  • #3B4AED

    Lightness: 58%

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 #818AF3

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

Current: #818AF3

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