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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
#646FF8
RGB Values
100, 111, 248
HSL Values
236°, 91%, 68%
CMYK Values
60%, 55%, 0%, 3%

Color Variations & Tints

  • #ACB1FB

    Lightness: 83%

  • #949BFA

    Lightness: 78%

  • #7B84F9

    Lightness: 73%

  • #646FF8

    Lightness: 68%

    Current color

  • #4B56F7

    Lightness: 63%

  • #323FF5

    Lightness: 58%

  • #1A29F4

    Lightness: 53%

Accessibility

White Text
4.1
FAIL
Black Text
5.2
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 #646FF8

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

Current: #646FF8

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