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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
#403FEF
RGB Values
64, 63, 239
HSL Values
240°, 85%, 59%
CMYK Values
73%, 74%, 0%, 6%

Color Variations & Tints

  • #8484F5

    Lightness: 74%

  • #6D6DF3

    Lightness: 69%

  • #5555F1

    Lightness: 64%

  • #403FEF

    Lightness: 59%

    Current color

  • #2626ED

    Lightness: 54%

  • #1313E7

    Lightness: 49%

  • #1111D0

    Lightness: 44%

Accessibility

White Text
6.6
PASS
Black Text
3.2
FAIL
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 #403FEF

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

Current: #403FEF

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