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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
#2D8DCD
RGB Values
45, 141, 205
HSL Values
204°, 64%, 49%
CMYK Values
78%, 31%, 0%, 20%

Color Variations & Tints

  • #68AFDE

    Lightness: 64%

  • #54A4D9

    Lightness: 59%

  • #3F99D5

    Lightness: 54%

  • #2D8DCD

    Lightness: 49%

    Current color

  • #287FB8

    Lightness: 44%

  • #2470A3

    Lightness: 39%

  • #1F628E

    Lightness: 34%

Accessibility

White Text
3.6
FAIL
Black Text
5.8
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 #2D8DCD

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

Current: #2D8DCD

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