Information about #21052B color

#21052B color image

Basic facts about this digital color

In the Register's classification, #21052B belongs to the Violet Color Family, featuring High Saturation and Very Dark brightness. The mix behind it: rgb(33, 5, 43) — 12.9% red, 2% green, 16.9% blue; the print equivalent is CMYK 4 / 15 / 0 / 83. Curious how these numbers work? Read our RGB color codes guide.

#21052B is a strongly colored blue-purple violet that sits very close to black. It is a natural fit for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is a near neighbor of Jacaranda (#2E0329). Its next-closest registered neighbors are Very Dark Purple (#2A0134) and Midnight Purple (#280137).

The recipe behind #21052B is rgb(33, 5, 43), with blue as the dominant ingredient. If you plan to put text on a #21052B background, choose white — the contrast ratio is 18.7:1 (passing WCAG AAA), while black manages only 1.1:1. On paper it relies strongly on black ink (K:83), so proof dark layouts before a large print run. No one has named #21052B so far. Register a name for it and it becomes a permanent record.

#21052B color variations

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

#21052B 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 #21052B

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

Conversions between color systems and etc.

  • HEX#21052B
  • RGB33, 5, 43
  • CMYK4, 15, 0, 83
  • CSSrgb(33, 5, 43)
  • HSL284°, 79%, 9%
  • HSL Precise284.211°, 79.167%, 9.412%
  • HSV284°, 88%, 17%
  • HSB284°, 88%, 17%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.020
  • Normalized B (0.0–1.0)0.169
  • GLSLvec3(0.129, 0.020, 0.169)
  • GLSL with alphavec4(0.129, 0.020, 0.169, 1.000)
  • HLSL / Metalfloat3(0.129, 0.020, 0.169)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB2%
  • Percentage of Blue in RGB16.9%
  • Color FamilyViolet
  • Saturation FamilyHigh Saturation
  • Lightness FamilyVery Dark
  • HEX ID21052B
  • DECIMAL ID2164011
  • Name LengthThis color has no name
  • Seen by search & AI crawlers12 times
  • Counting from2025-01-01