Information about #303F4B color

#303F4B color image

Basic facts about this digital color

In the Register's classification, #303F4B belongs to the Azure Color Family, featuring Low Saturation and Dark brightness. In numbers: rgb(48, 63, 75) (18.8% red, 24.7% green, 29.4% blue), or CMYK 11 / 5 / 0 / 71 for print. Curious how these numbers work? Read our RGB color codes guide.

A softly toned sky-leaning azure, #303F4B stays on the darker end of the scale. Expect to see shades like this in dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is practically indistinguishable from Big Stone (#334046). Slightly further away sit Cloud Burst (#353E4F) and Majestic Blue (#36434A).

The recipe behind #303F4B is rgb(48, 63, 75), with blue as the dominant ingredient. Accessibility-wise, white text works best on #303F4B: 10.8:1 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. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.

#303F4B color variations

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

#303F4B 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 #303F4B

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

Big Stone color link
Big Stone

#334046

Cloud Burst color link
Cloud Burst

#353E4F

Gotham color link
Gotham

#303B44

Avalanche color link
Avalanche

#354152

Charcoal color link
Charcoal

#36454F

Madison color link
Madison

#2D3C54

Warrior color link
Warrior

#2D3B42

Mirage color link
Mirage

#373F43

Firefly color link
Firefly

#314643

Ares blue color link
Ares blue

#2D4255

Conversions between color systems and etc.

  • HEX#303F4B
  • RGB48, 63, 75
  • CMYK11, 5, 0, 71
  • CSSrgb(48, 63, 75)
  • HSL207°, 22%, 24%
  • HSL Precise206.667°, 21.951%, 24.118%
  • HSV207°, 36%, 29%
  • HSB207°, 36%, 29%
  • Normalized R (0.0–1.0)0.188
  • Normalized G (0.0–1.0)0.247
  • Normalized B (0.0–1.0)0.294
  • GLSLvec3(0.188, 0.247, 0.294)
  • GLSL with alphavec4(0.188, 0.247, 0.294, 1.000)
  • HLSL / Metalfloat3(0.188, 0.247, 0.294)
  • Percentage of Red in RGB18.8%
  • Percentage of Green in RGB24.7%
  • Percentage of Blue in RGB29.4%
  • Color FamilyAzure
  • Saturation FamilyLow Saturation
  • Lightness FamilyDark
  • HEX ID303F4B
  • DECIMAL ID3161931
  • Name LengthThis color has no name
  • Seen by search & AI crawlers13 times
  • Counting from2025-01-01