Information about #231F21 color
Basic facts about this digital color
#231F21 is a softly muted balanced grey tone that leans clearly toward the dark side. In practice it works well for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is practically indistinguishable from Black Charcoal (#212121). Its next-closest registered neighbors are Raisin Black (#242124) and Cosmonaut (#26211F).
In RGB terms — rgb(35, 31, 33) — the red channel does the heavy lifting here. Accessibility-wise, white text works best on #231F21: 16.3:1 contrast (passing WCAG AAA) versus 1.3:1 for black. For print, note the heavy black component (K:86) — ink coverage matters with tones this deep. #231F21 has no official name yet. If this shade means something to you, you can be the one to name it.
#231F21 color variations
View this color variations of tints, shades, tones and hues.
#231F21 color tints
Tints look brighter, pastel, and less intense.
#231F21 color shades
Shades look darker, richer, and more solid.
#231F21 color tones
Tones looks more sophisticated and complex than base colors.
#231F21 color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#231F21 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 #231F21 color
View adjacent and very similar colors.
Nearest named colors to #231F21
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#212121
#242124
#26211F
#232224
#252321
#282020
#27221F
#1D2020
#28201D
#252525
#1C1D1F
#24221A
#231F21 color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#231F21
- RGB35, 31, 33
- CMYK0, 2, 1, 86
- CSSrgb(35, 31, 33)
- HSL330°, 6%, 13%
- HSL Precise330°, 6.061%, 12.941%
- HSV330°, 11%, 14%
- HSB330°, 11%, 14%
- Normalized R (0.0–1.0)0.137
- Normalized G (0.0–1.0)0.122
- Normalized B (0.0–1.0)0.129
- GLSLvec3(0.137, 0.122, 0.129)
- GLSL with alphavec4(0.137, 0.122, 0.129, 1.000)
- HLSL / Metalfloat3(0.137, 0.122, 0.129)
- Percentage of Red in RGB13.7%
- Percentage of Green in RGB12.2%
- Percentage of Blue in RGB12.9%
- Color FamilyRose
- Saturation FamilyDesaturated
- Lightness FamilyDark
- HEX ID231F21
- DECIMAL ID2301729
- Name LengthThis color has no name
- Seen by search & AI crawlers26 times
- Counting from2025-01-01
