Information about #21291B color
Basic facts about this digital color
#21291B presents itself as a calm, restrained zesty chartreuse — 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 a hair away from Top Gear (#24221A). Its next-closest registered neighbors are Black Chestnut Oak (#252321) and Black Charcoal (#212121).
In RGB terms — rgb(33, 41, 27) — the green channel does the heavy lifting here. Accessibility-wise, white text works best on #21291B: 15.0:1 contrast (passing WCAG AAA) versus 1.4:1 for black. On paper it relies strongly on black ink (K:84), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #21291B is still unnamed — it can be claimed and named in The Official Register of Color Names.
#21291B color variations
View this color variations of tints, shades, tones and hues.
#21291B color tints
Tints look brighter, pastel, and less intense.
#21291B color shades
Shades look darker, richer, and more solid.
#21291B color tones
Tones looks more sophisticated and complex than base colors.
#21291B color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#21291B 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.
Split complementary
Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.
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.
Triadic
Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.
Tetradic
Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.
Square
Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.
Alternatives to #21291B color
View adjacent and very similar colors.
Nearest named colors to #21291B
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#24221A
#252321
#212121
#27221F
#26211F
#1A2421
#1D2020
#292421
#2A2922
#252525
#28201D
#232224
#21291B color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#21291B
- RGB33, 41, 27
- CMYK3, 0, 5, 84
- CSSrgb(33, 41, 27)
- HSL94°, 21%, 13%
- HSL Precise94.286°, 20.588%, 13.333%
- HSV94°, 34%, 16%
- HSB94°, 34%, 16%
- Normalized R (0.0–1.0)0.129
- Normalized G (0.0–1.0)0.161
- Normalized B (0.0–1.0)0.106
- GLSLvec3(0.129, 0.161, 0.106)
- GLSL with alphavec4(0.129, 0.161, 0.106, 1.000)
- HLSL / Metalfloat3(0.129, 0.161, 0.106)
- Percentage of Red in RGB12.9%
- Percentage of Green in RGB16.1%
- Percentage of Blue in RGB10.6%
- Color FamilyChartreuse
- Saturation FamilyLow Saturation
- Lightness FamilyDark
- HEX ID21291B
- DECIMAL ID2173211
- Name LengthThis color has no name
- Seen by search & AI crawlers26 times
- Counting from2025-01-01
