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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
#3645B5
RGB Values
54, 69, 181
HSL Values
233°, 54%, 46%
CMYK Values
70%, 62%, 0%, 29%

Color Variations & Tints

  • #6672D1

    Lightness: 61%

  • #5260CB

    Lightness: 56%

  • #3F4EC6

    Lightness: 51%

  • #3645B5

    Lightness: 46%

    Current color

  • #303DA1

    Lightness: 41%

  • #2A368D

    Lightness: 36%

  • #242E7A

    Lightness: 31%

Accessibility

White Text
7.8
PASS
Black Text
2.7
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 #3645B5

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

Current: #3645B5

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