Information about #AC331B color

#AC331B color image

Basic facts about this digital color

In the Register's classification, #AC331B belongs to the Red Color Family, featuring High Saturation and Neutral brightness. The mix behind it: rgb(172, 51, 27) — 67.5% red, 20% green, 10.6% blue; the print equivalent is CMYK 0 / 47 / 57 / 33. Curious how these numbers work? Read our RGB color codes guide.

The color #AC331B reads as a energetic, saturated red and holds a balanced mid-tone. Expect to see shades like this in accents, call-to-action elements and statement visuals. In The Official Register of Color Names it is almost identical to Chinese Red (#AA381E). Its next-closest registered neighbors are Rustic Coral (#AE3415) and Chinese Brown (#AB381F).

In RGB terms — rgb(172, 51, 27) — the red channel does the heavy lifting here. Accessibility-wise, white text works best on #AC331B: 6.5:1 contrast (passing WCAG AA) versus 3.2:1 for black. Out of 16,777,216 possible colors, #AC331B is still unnamed — it can be claimed and named in The Official Register of Color Names.

#AC331B color variations

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

#AC331B 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 #AC331B

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

Chinese Red color link
Chinese Red

#AA381E

Rustic Coral color link
Rustic Coral

#AE3415

Bonfire color link
Bonfire

#A62A20

Brick color link
Brick

#A03623

Brownish Red color link
Brownish Red

#9E3623

Vintage Red color link
Vintage Red

#AF2413

Ayers Rock color link
Ayers Rock

#AE451D

Red Birch color link
Red Birch

#9D2B22

Conversions between color systems and etc.

  • HEX#AC331B
  • RGB172, 51, 27
  • CMYK0, 47, 57, 33
  • CSSrgb(172, 51, 27)
  • HSL10°, 73%, 39%
  • HSL Precise9.931°, 72.864%, 39.02%
  • HSV10°, 84%, 67%
  • HSB10°, 84%, 67%
  • Normalized R (0.0–1.0)0.675
  • Normalized G (0.0–1.0)0.200
  • Normalized B (0.0–1.0)0.106
  • GLSLvec3(0.675, 0.200, 0.106)
  • GLSL with alphavec4(0.675, 0.200, 0.106, 1.000)
  • HLSL / Metalfloat3(0.675, 0.200, 0.106)
  • Percentage of Red in RGB67.5%
  • Percentage of Green in RGB20%
  • Percentage of Blue in RGB10.6%
  • Color FamilyRed
  • Saturation FamilyHigh Saturation
  • Lightness FamilyNeutral
  • HEX IDAC331B
  • DECIMAL ID11285275
  • Name LengthThis color has no name
  • This page visited8 times
  • Counting from2025-01-01