/
Colorbook
Sign in Sign up

Color Information

Blue

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

HEX Format
#0B21CC
RGB Values
11, 33, 204
HSL Values
233°, 90%, 42%
CMYK Values
95%, 84%, 0%, 20%

Color Variations & Tints

  • #2F46F4

    Lightness: 57%

  • #1630F3

    Lightness: 52%

  • #0C25E4

    Lightness: 47%

  • #0B21CC

    Lightness: 42%

    Current color

  • #091DB3

    Lightness: 37%

  • #08199B

    Lightness: 32%

  • #071583

    Lightness: 27%

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 #0B21CC

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

Current: #0B21CC

Discover More Colors

Explore a randomly curated selection of colors. Each refresh brings new inspiration for your palette.