Information about #21535E color
Basic facts about this digital color
A confidently colored water-like cyan, #21535E leans clearly toward the dark side. Designers typically reach for tones like this for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Dark Arctic Blue (#275359). Its next-closest registered neighbors are Retro (#1B5256) and Arapawa (#274A5D).
In RGB terms — rgb(33, 83, 94) — the blue channel does the heavy lifting here. If you plan to put text on a #21535E background, choose white — the contrast ratio is 8.5:1 (passing WCAG AAA), while black manages only 2.5:1. On paper it relies strongly on black ink (K:63), so proof dark layouts before a large print run. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.
#21535E color variations
View this color variations of tints, shades, tones and hues.
#21535E color tints
Tints look brighter, pastel, and less intense.
#21535E color shades
Shades look darker, richer, and more solid.
#21535E color tones
Tones looks more sophisticated and complex than base colors.
#21535E color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#21535E 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 #21535E color
View adjacent and very similar colors.
Nearest named colors to #21535E
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#275359
#1B5256
#274A5D
#1F4F54
#284962
#2E5060
#275953
#214559
#154C65
#29465B
#274B6A
#304E5E
#21535E color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#21535E
- RGB33, 83, 94
- CMYK24, 4, 0, 63
- CSSrgb(33, 83, 94)
- HSL191°, 48%, 25%
- HSL Precise190.82°, 48.031%, 24.902%
- HSV191°, 65%, 37%
- HSB191°, 65%, 37%
- Normalized R (0.0–1.0)0.129
- Normalized G (0.0–1.0)0.325
- Normalized B (0.0–1.0)0.369
- GLSLvec3(0.129, 0.325, 0.369)
- GLSL with alphavec4(0.129, 0.325, 0.369, 1.000)
- HLSL / Metalfloat3(0.129, 0.325, 0.369)
- Percentage of Red in RGB12.9%
- Percentage of Green in RGB32.5%
- Percentage of Blue in RGB36.9%
- Color FamilyCyan
- Saturation FamilyModerate Saturation
- Lightness FamilyDark
- HEX ID21535E
- DECIMAL ID2184030
- Name LengthThis color has no name
- Seen by search & AI crawlers12 times
- Counting from2025-01-01
