Information about #3B1921 color

#3B1921 color image

Basic facts about this digital color

In the Register's classification, #3B1921 belongs to the Red Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(59, 25, 33) (23.1% red, 9.8% green, 12.9% blue), or CMYK 0 / 13 / 10 / 77 for print. Curious how these numbers work? Read our RGB color codes guide.

#3B1921 presents itself as a confidently colored earthy red — one that leans clearly toward the dark side. It is a natural fit for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is almost identical to Spitfire (#381921). Its next-closest registered neighbors are Chocolate Kisses (#3C1421) and Ravishing (#401A22).

The recipe behind #3B1921 is rgb(59, 25, 33), with red as the dominant ingredient. Accessibility-wise, white text works best on #3B1921: 15.6:1 contrast (passing WCAG AAA) versus 1.3:1 for black. On paper it relies strongly on black ink (K:77), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #3B1921 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#3B1921 color variations

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

#3B1921 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 #3B1921

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

Spitfire color link
Spitfire

#381921

Ravishing color link
Ravishing

#401A22

Jumpstart color link
Jumpstart

#3E2025

Black Kite color link
Black Kite

#351E1C

Temptress color link
Temptress

#3C2126

Toorak color link
Toorak

#392523

Brown Pod color link
Brown Pod

#3C241B

Dark Crimson color link
Dark Crimson

#402327

Conundrum color link
Conundrum

#3C202C

Conversions between color systems and etc.

  • HEX#3B1921
  • RGB59, 25, 33
  • CMYK0, 13, 10, 77
  • CSSrgb(59, 25, 33)
  • HSL346°, 40%, 16%
  • HSL Precise345.882°, 40.476%, 16.471%
  • HSV346°, 58%, 23%
  • HSB346°, 58%, 23%
  • Normalized R (0.0–1.0)0.231
  • Normalized G (0.0–1.0)0.098
  • Normalized B (0.0–1.0)0.129
  • GLSLvec3(0.231, 0.098, 0.129)
  • GLSL with alphavec4(0.231, 0.098, 0.129, 1.000)
  • HLSL / Metalfloat3(0.231, 0.098, 0.129)
  • Percentage of Red in RGB23.1%
  • Percentage of Green in RGB9.8%
  • Percentage of Blue in RGB12.9%
  • Color FamilyRed
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID3B1921
  • DECIMAL ID3873057
  • Name LengthThis color has no name
  • Seen by search & AI crawlers31 times
  • Counting from2025-01-01