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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
#289EFC
RGB Values
40, 158, 252
HSL Values
207°, 97%, 57%
CMYK Values
84%, 37%, 0%, 1%

Color Variations & Tints

  • #72BFFD

    Lightness: 72%

  • #59B3FC

    Lightness: 67%

  • #40A7FC

    Lightness: 62%

  • #289EFC

    Lightness: 57%

    Current color

  • #0E90FB

    Lightness: 52%

  • #0483EC

    Lightness: 47%

  • #0375D3

    Lightness: 42%

Accessibility

White Text
2.8
FAIL
Black Text
7.4
PASS
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 #289EFC

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

Current: #289EFC

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