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Colorbook
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Color Information

Black

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#373F6D
RGB Values
55, 63, 109
HSL Values
231°, 33%, 32%
CMYK Values
50%, 42%, 0%, 57%

Color Variations & Tints

  • #505C9F

    Lightness: 47%

  • #48528E

    Lightness: 42%

  • #3F497D

    Lightness: 37%

  • #373F6D

    Lightness: 32%

    Current color

  • #2E355C

    Lightness: 27%

  • #262B4B

    Lightness: 22%

  • #1D213A

    Lightness: 17%

Accessibility

White Text
10.0
PASS
Black Text
2.1
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 #373F6D

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

Current: #373F6D

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