Information about #373B40 color

#373B40 color image

Basic facts about this digital color

#373B40 falls into the Azure Color Family — Desaturated, Dark brightness. The mix behind it: rgb(55, 59, 64) — 21.6% red, 23.1% green, 25.1% blue; the print equivalent is CMYK 4 / 2 / 0 / 75. New to color codes? See our guide to RGB color codes.

#373B40 presents itself as a softly muted neutral grey — 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 Metallic Charcoal (#343B40). Its next-closest registered neighbors are Mine Shaft (#373E41) and Atom (#373A3C).

The recipe behind #373B40 is rgb(55, 59, 64), with blue as the dominant ingredient. Accessibility-wise, white text works best on #373B40: 11.3:1 contrast (passing WCAG AAA) versus 1.9:1 for black. On paper it relies strongly on black ink (K:75), so proof dark layouts before a large print run. #373B40 has no official name yet. If this shade means something to you, you can be the one to name it.

#373B40 color variations

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

#373B40 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 #373B40

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

Mine Shaft color link
Mine Shaft

#373E41

Atom color link
Atom

#373A3C

Black Marlin color link
Black Marlin

#383740

Mirage color link
Mirage

#373F43

Vulcan color link
Vulcan

#36383C

Revolver color link
Revolver

#37363F

Baltic Sea color link
Baltic Sea

#3C3D3E

Onando color link
Onando

#364141

Charade color link
Charade

#394043

Fuscous Grey color link
Fuscous Grey

#3C3B3C

High Tide color link
High Tide

#32373F

Conversions between color systems and etc.

  • HEX#373B40
  • RGB55, 59, 64
  • CMYK4, 2, 0, 75
  • CSSrgb(55, 59, 64)
  • HSL213°, 8%, 23%
  • HSL Precise213.333°, 7.563%, 23.333%
  • HSV213°, 14%, 25%
  • HSB213°, 14%, 25%
  • Normalized R (0.0–1.0)0.216
  • Normalized G (0.0–1.0)0.231
  • Normalized B (0.0–1.0)0.251
  • GLSLvec3(0.216, 0.231, 0.251)
  • GLSL with alphavec4(0.216, 0.231, 0.251, 1.000)
  • HLSL / Metalfloat3(0.216, 0.231, 0.251)
  • Percentage of Red in RGB21.6%
  • Percentage of Green in RGB23.1%
  • Percentage of Blue in RGB25.1%
  • Color FamilyAzure
  • Saturation FamilyDesaturated
  • Lightness FamilyDark
  • HEX ID373B40
  • DECIMAL ID3619648
  • Name LengthThis color has no name
  • Seen by search & AI crawlers10 times
  • Counting from2025-01-01