Information about #21564B color
Basic facts about this digital color
A clearly saturated aqua cyan, #21564B stays on the darker end of the scale. Designers typically reach for tones like this for moody backdrops, typography on light surfaces and premium packaging. In The Official Register of Color Names it is a hair away from Push Play (#21584C). Slightly further away sit Dark Opal (#275953) and Beatnik (#1F4F54).
Technically, the mix leans on its green channel (rgb(33, 86, 75)), which gives #21564B its character. On this background, white text reaches a 8.4:1 contrast ratio (passing WCAG AAA); black stays at 2.5:1. On paper it relies strongly on black ink (K:66), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #21564B is still unnamed — it can be claimed and named in The Official Register of Color Names.
#21564B color variations
View this color variations of tints, shades, tones and hues.
#21564B color tints
Tints look brighter, pastel, and less intense.
#21564B color shades
Shades look darker, richer, and more solid.
#21564B color tones
Tones looks more sophisticated and complex than base colors.
#21564B color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#21564B 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 #21564B color
View adjacent and very similar colors.
Nearest named colors to #21564B
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#21584C
#275953
#1F4F54
#26604F
#1B5256
#145346
#275359
#266242
#2F4F4F
#266255
#1B4D3E
#1F6357
#21564B color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#21564B
- RGB33, 86, 75
- CMYK21, 0, 4, 66
- CSSrgb(33, 86, 75)
- HSL168°, 45%, 23%
- HSL Precise167.547°, 44.538%, 23.333%
- HSV168°, 62%, 34%
- HSB168°, 62%, 34%
- Normalized R (0.0–1.0)0.129
- Normalized G (0.0–1.0)0.337
- Normalized B (0.0–1.0)0.294
- GLSLvec3(0.129, 0.337, 0.294)
- GLSL with alphavec4(0.129, 0.337, 0.294, 1.000)
- HLSL / Metalfloat3(0.129, 0.337, 0.294)
- Percentage of Red in RGB12.9%
- Percentage of Green in RGB33.7%
- Percentage of Blue in RGB29.4%
- Color FamilyCyan
- Saturation FamilyModerate Saturation
- Lightness FamilyDark
- HEX ID21564B
- DECIMAL ID2184779
- Name LengthThis color has no name
- Seen by search & AI crawlers13 times
- Counting from2025-01-01
