/
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
#0388DB
RGB Values
3, 136, 219
HSL Values
203°, 97%, 44%
CMYK Values
99%, 38%, 0%, 14%

Color Variations & Tints

  • #31AEFC

    Lightness: 59%

  • #18A4FB

    Lightness: 54%

  • #0499F6

    Lightness: 49%

  • #0388DB

    Lightness: 44%

    Current color

  • #037AC4

    Lightness: 39%

  • #036AAB

    Lightness: 34%

  • #025B92

    Lightness: 29%

Accessibility

White Text
3.8
FAIL
Black Text
5.5
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 #0388DB

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

Current: #0388DB

Discover More Colors

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