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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
#2151B0
RGB Values
33, 81, 176
HSL Values
220°, 68%, 41%
CMYK Values
81%, 54%, 0%, 31%

Color Variations & Tints

  • #4375DB

    Lightness: 56%

  • #2D66D7

    Lightness: 51%

  • #265BC5

    Lightness: 46%

  • #2151B0

    Lightness: 41%

    Current color

  • #1D479A

    Lightness: 36%

  • #193D85

    Lightness: 31%

  • #15336F

    Lightness: 26%

Accessibility

White Text
7.3
PASS
Black Text
2.9
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 #2151B0

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

Current: #2151B0

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