/
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
#183BF0
RGB Values
24, 59, 240
HSL Values
230°, 88%, 52%
CMYK Values
90%, 75%, 0%, 6%

Color Variations & Tints

  • #6179F5

    Lightness: 67%

  • #4965F3

    Lightness: 62%

  • #3151F2

    Lightness: 57%

  • #183BF0

    Lightness: 52%

    Current color

  • #0E32E1

    Lightness: 47%

  • #0D2CC9

    Lightness: 42%

  • #0B27B1

    Lightness: 37%

Accessibility

White Text
7.2
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 #183BF0

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

Current: #183BF0

Discover More Colors

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