Information about #21100B color

#21100B color image

Basic facts about this digital color

In the Register's classification, #21100B belongs to the Red Color Family, featuring Moderate Saturation and Very Dark brightness. The mix behind it: rgb(33, 16, 11) — 12.9% red, 6.3% green, 4.3% blue; the print equivalent is CMYK 0 / 7 / 9 / 87. Curious how these numbers work? Read our RGB color codes guide.

#21100B is a pleasantly vivid red that lives deep in the shadows. 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 hair away from Officer I cant breathe (#231107). Nearby in the Register you will also find Crowshead (#1C1208) and Very Reddish Brown (#1D1111).

Technically, the mix leans on its red channel (rgb(33, 16, 11)), which gives #21100B its character. If you plan to put text on a #21100B background, choose white — the contrast ratio is 18.4:1 (passing WCAG AAA), while black manages only 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, #21100B is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21100B color variations

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

#21100B color tints

Tints look brighter, pastel, and less intense.
#21100B

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#683222

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#AD5439

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#D08973

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#E7C4B9

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White

#FFFFFF

#21100B color shades

Shades look darker, richer, and more solid.
#21100B

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#1B0D09

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#140A06

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#0D0604

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#060302

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Black

#000000

#21100B color tones

Tones looks more sophisticated and complex than base colors.
#21100B

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#3D221A

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#54362D

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#664C44

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#75645F

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Grey

#808080

#21100B color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#18220B

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#21220B

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#221A0B

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#21100B

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#220B0F

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#220B18

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#220B21

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#21100B 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
#21100B
#21100B

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#0B1D22
#0B1D22

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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
#21100B
#21100B

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#0B1222
#0B1222

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#0B221C
#0B221C

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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
#221C0B
#221C0B

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#21100B
#21100B

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#220B12
#220B12

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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
#21100B
#21100B

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#0B2211
#0B2211

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#110B22
#110B22

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Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme
#21100B
#21100B

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#1D220B
#1D220B

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#0B1D22
#0B1D22

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#110B22
#110B22

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Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme
#21100B
#21100B

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#12220B
#12220B

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#0B1D22
#0B1D22

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#1C0B22
#1C0B22

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Nearest named colors to #21100B

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

Officer I cant breathe color link
Officer I cant breathe

#231107

Crowshead color link
Crowshead

#1C1208

Very Reddish Brown color link
Very Reddish Brown

#1D1111

Licorice color link
Licorice

#1A1110

Cannon Black color link
Cannon Black

#251706

Vintage Black color link
Vintage Black

#18130E

Acadia color link
Acadia

#1B1404

Very Brown color link
Very Brown

#1D1711

Root Beer color link
Root Beer

#290E05

Brown-Mallee color link
Brown-Mallee

#211216

Black Chocolate color link
Black Chocolate

#1B1811

Very Deep Brown color link
Very Deep Brown

#1D0E00

#21100B color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

#21100B color image #21100B color ORCN HD wallpaper 3840x2160 (Desktop)
#21100B color image #21100B color ORCN HD wallpaper 1170x2532 (Mobile)
#21100B color image #21100B color solid HD wallpaper 3840x2160 (Desktop)
#21100B color image #21100B color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21100B
  • RGB33, 16, 11
  • CMYK0, 7, 9, 87
  • CSSrgb(33, 16, 11)
  • HSL14°, 50%, 9%
  • HSL Precise13.636°, 50%, 8.627%
  • HSV14°, 67%, 13%
  • HSB14°, 67%, 13%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.063
  • Normalized B (0.0–1.0)0.043
  • GLSLvec3(0.129, 0.063, 0.043)
  • GLSL with alphavec4(0.129, 0.063, 0.043, 1.000)
  • HLSL / Metalfloat3(0.129, 0.063, 0.043)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB6.3%
  • Percentage of Blue in RGB4.3%
  • Color Family (Hue)Red
  • Saturation FamilyModerate Saturation
  • Lightness FamilyVery Dark
  • HEX ID21100B
  • DECIMAL ID2166795
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01

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