/
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
#151CD2
RGB Values
21, 28, 210
HSL Values
238°, 82%, 45%
CMYK Values
90%, 87%, 0%, 18%

Color Variations & Tints

  • #454BED

    Lightness: 60%

  • #2E34EA

    Lightness: 55%

  • #171EE8

    Lightness: 50%

  • #151CD2

    Lightness: 45%

    Current color

  • #1218BA

    Lightness: 40%

  • #1015A2

    Lightness: 35%

  • #0E128B

    Lightness: 30%

Accessibility

White Text
9.9
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 #151CD2

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

Current: #151CD2

Discover More Colors

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