Information about #303B4B color

#303B4B color image

Basic facts about this digital color

#303B4B falls into the Azure Color Family — Low Saturation, Dark brightness. The mix behind it: rgb(48, 59, 75) — 18.8% red, 23.1% green, 29.4% blue; the print equivalent is CMYK 11 / 6 / 0 / 71. New to color codes? See our guide to RGB color codes.

#303B4B presents itself as a softly toned sky-leaning azure — one that leans clearly toward the dark side. In practice it works well for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is a hair away from Gotham (#303B44). Its next-closest registered neighbors are Cloud Burst (#353E4F) and Big Stone (#334046).

The recipe behind #303B4B is rgb(48, 59, 75), with blue as the dominant ingredient. Accessibility-wise, white text works best on #303B4B: 11.3:1 contrast (passing WCAG AAA) versus 1.9:1 for black. On paper it relies strongly on black ink (K:71), so proof dark layouts before a large print run. #303B4B has no official name yet. If this shade means something to you, you can be the one to name it.

#303B4B color variations

View this color variations of tints, shades, tones and hues.

#303B4B color harmonies

Color harmonies are pleasing color schemes created according to their position on a color wheel.

Complementary

Complementary color schemes are made by picking two opposite colors con the color wheel. They appear vibrant near to each other.

Complementary color schemes

Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme

Analogous

Analogous color schemes are made by picking three colors that are next to each other on the color wheel. They are perceived as calm and serene.

Analogous color scheme

Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme

Nearest named colors to #303B4B

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Gotham color link
Gotham

#303B44

Cloud Burst color link
Cloud Burst

#353E4F

Big Stone color link
Big Stone

#334046

Bunting color link
Bunting

#2B3449

Checkmate color link
Checkmate

#2F324A

Vintage Navy color link
Vintage Navy

#2A344D

Warrior color link
Warrior

#2D3B42

Madison color link
Madison

#2D3C54

Avalanche color link
Avalanche

#354152

Galactica color link
Galactica

#303655

Conversions between color systems and etc.

  • HEX#303B4B
  • RGB48, 59, 75
  • CMYK11, 6, 0, 71
  • CSSrgb(48, 59, 75)
  • HSL216°, 22%, 24%
  • HSL Precise215.556°, 21.951%, 24.118%
  • HSV216°, 36%, 29%
  • HSB216°, 36%, 29%
  • Normalized R (0.0–1.0)0.188
  • Normalized G (0.0–1.0)0.231
  • Normalized B (0.0–1.0)0.294
  • GLSLvec3(0.188, 0.231, 0.294)
  • GLSL with alphavec4(0.188, 0.231, 0.294, 1.000)
  • HLSL / Metalfloat3(0.188, 0.231, 0.294)
  • Percentage of Red in RGB18.8%
  • Percentage of Green in RGB23.1%
  • Percentage of Blue in RGB29.4%
  • Color FamilyAzure
  • Saturation FamilyLow Saturation
  • Lightness FamilyDark
  • HEX ID303B4B
  • DECIMAL ID3160907
  • Name LengthThis color has no name
  • Seen by search & AI crawlers9 times
  • Counting from2025-01-01