Information about #30303D color

#30303D color image

Basic facts about this digital color

In the Register's classification, #30303D belongs to the Blue Color Family, featuring Low Saturation and Dark brightness. In numbers: rgb(48, 48, 61) (18.8% red, 18.8% green, 23.9% blue), or CMYK 5 / 5 / 0 / 76 for print. Curious how these numbers work? Read our RGB color codes guide.

A calm, restrained deep-sea blue, #30303D leans clearly toward the dark side. Expect to see shades like this in night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Crater Smoke (#2F2E3A). Its next-closest registered neighbors are Black Rock (#2C2D3C) and Catch (#34343C).

In RGB terms — rgb(48, 48, 61) — the blue channel does the heavy lifting here. If you plan to put text on a #30303D background, choose white — the contrast ratio is 13.0:1 (passing WCAG AAA), while black manages only 1.6:1. On paper it relies strongly on black ink (K:76), 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.

#30303D color variations

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

#30303D 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 #30303D

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

Crater Smoke color link
Crater Smoke

#2F2E3A

Black Rock color link
Black Rock

#2C2D3C

Catch color link
Catch

#34343C

Woody Bay color link
Woody Bay

#33343A

Blueprint color link
Blueprint

#2A313F

Double Tuna color link
Double Tuna

#2F3237

Gumboot color link
Gumboot

#313337

High Tide color link
High Tide

#32373F

Shark color link
Shark

#34363A

Grey Friars color link
Grey Friars

#313436

Gunmetal color link
Gunmetal

#2A3439

Conversions between color systems and etc.

  • HEX#30303D
  • RGB48, 48, 61
  • CMYK5, 5, 0, 76
  • CSSrgb(48, 48, 61)
  • HSL240°, 12%, 21%
  • HSL Precise240°, 11.927%, 21.373%
  • HSV240°, 21%, 24%
  • HSB240°, 21%, 24%
  • Normalized R (0.0–1.0)0.188
  • Normalized G (0.0–1.0)0.188
  • Normalized B (0.0–1.0)0.239
  • GLSLvec3(0.188, 0.188, 0.239)
  • GLSL with alphavec4(0.188, 0.188, 0.239, 1.000)
  • HLSL / Metalfloat3(0.188, 0.188, 0.239)
  • Percentage of Red in RGB18.8%
  • Percentage of Green in RGB18.8%
  • Percentage of Blue in RGB23.9%
  • Color FamilyBlue
  • Saturation FamilyLow Saturation
  • Lightness FamilyDark
  • HEX ID30303D
  • DECIMAL ID3158077
  • Name LengthThis color has no name
  • Seen by search & AI crawlers16 times
  • Counting from2025-01-01