Information about #21373A color
Basic facts about this digital color
A moderately toned water-like cyan, #21373A leans clearly toward the dark side. Expect to see shades like this in dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is practically indistinguishable from Goryeo Storeroom (#203838). Its next-closest registered neighbors are Dark Slate Grey (#25383C) and Nordic (#1D393C).
The recipe behind #21373A is rgb(33, 55, 58), with blue as the dominant ingredient. Accessibility-wise, white text works best on #21373A: 12.6:1 contrast (passing WCAG AAA) versus 1.7:1 for black. For print, note the heavy black component (K:77) — ink coverage matters with tones this deep. #21373A has no official name yet. If this shade means something to you, you can be the one to name it.
#21373A color variations
View this color variations of tints, shades, tones and hues.
#21373A color tints
Tints look brighter, pastel, and less intense.
#21373A color shades
Shades look darker, richer, and more solid.
#21373A color tones
Tones looks more sophisticated and complex than base colors.
#21373A color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#21373A 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 #21373A color
View adjacent and very similar colors.
Nearest named colors to #21373A
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#203838
#25383C
#1D393C
#243640
#243442
#242E3B
#2A3439
#293741
#2B3736
#232D36
#234040
#2A3335
#21373A color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#21373A
- RGB33, 55, 58
- CMYK10, 1, 0, 77
- CSSrgb(33, 55, 58)
- HSL187°, 27%, 18%
- HSL Precise187.2°, 27.473%, 17.843%
- HSV187°, 43%, 23%
- HSB187°, 43%, 23%
- Normalized R (0.0–1.0)0.129
- Normalized G (0.0–1.0)0.216
- Normalized B (0.0–1.0)0.227
- GLSLvec3(0.129, 0.216, 0.227)
- GLSL with alphavec4(0.129, 0.216, 0.227, 1.000)
- HLSL / Metalfloat3(0.129, 0.216, 0.227)
- Percentage of Red in RGB12.9%
- Percentage of Green in RGB21.6%
- Percentage of Blue in RGB22.7%
- Color FamilyCyan
- Saturation FamilyMild Saturation
- Lightness FamilyDark
- HEX ID21373A
- DECIMAL ID2176826
- Name LengthThis color has no name
- Seen by search & AI crawlers12 times
- Counting from2025-01-01
