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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
#657BDF
RGB Values
101, 123, 223
HSL Values
229°, 66%, 64%
CMYK Values
55%, 45%, 0%, 13%

Color Variations & Tints

  • #A6B3ED

    Lightness: 79%

  • #91A1E8

    Lightness: 74%

  • #7C8FE4

    Lightness: 69%

  • #657BDF

    Lightness: 64%

    Current color

  • #516BDB

    Lightness: 59%

  • #3C59D7

    Lightness: 54%

  • #2A49CF

    Lightness: 49%

Accessibility

White Text
3.9
FAIL
Black Text
5.5
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 #657BDF

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

Current: #657BDF

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