Information about #21001D color

#21001D color image

Basic facts about this digital color

#21001D falls into the Magenta Color Family — Full Saturation, Very Dark brightness. Its exact recipe is rgb(33, 0, 29) — 12.9% red, 0% green, 11.4% blue — and for print it converts to CMYK 0 / 13 / 2 / 87. Curious how these numbers work? Read our RGB color codes guide.

#21001D is a pure, full-strength purple-pink magenta that keeps to the darkest edge of the palette. It is a natural fit for moody backdrops, typography on light surfaces and premium packaging. In The Official Register of Color Names it is practically indistinguishable from Very Deep Magenta (#1D001D). Slightly further away sit Very Deep Rose (#1D000E) and Very Dark Magenta (#1D111D).

Technically, the mix leans on its red channel (rgb(33, 0, 29)), which gives #21001D its character. On this background, white text reaches a 19.4:1 contrast ratio (passing WCAG AAA); black stays at 1.1:1. On paper it relies strongly on black ink (K:87), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #21001D is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21001D color variations

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

#21001D 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 #21001D

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#21001D
  • RGB33, 0, 29
  • CMYK0, 13, 2, 87
  • CSSrgb(33, 0, 29)
  • HSL307°, 100%, 6%
  • HSL Precise307.273°, 100%, 6.471%
  • HSV307°, 100%, 13%
  • HSB307°, 100%, 13%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.000
  • Normalized B (0.0–1.0)0.114
  • GLSLvec3(0.129, 0.000, 0.114)
  • GLSL with alphavec4(0.129, 0.000, 0.114, 1.000)
  • HLSL / Metalfloat3(0.129, 0.000, 0.114)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB0%
  • Percentage of Blue in RGB11.4%
  • Color FamilyMagenta
  • Saturation FamilyFull Saturation
  • Lightness FamilyVery Dark
  • HEX ID21001D
  • DECIMAL ID2162717
  • Name LengthThis color has no name
  • Seen by search & AI crawlers20 times
  • Counting from2025-01-01