Information about #21353A color

#21353A color image

Basic facts about this digital color

In the Register's classification, #21353A belongs to the Cyan Color Family, featuring Mild Saturation and Dark brightness. The mix behind it: rgb(33, 53, 58) — 12.9% red, 20.8% green, 22.7% blue; the print equivalent is CMYK 10 / 2 / 0 / 77. Curious how these numbers work? Read our RGB color codes guide.

#21353A is a moderately toned aqua cyan that stays on the darker end of the scale. 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 Goryeo Storeroom (#203838). Slightly further away sit Dark Slate Grey (#25383C) and Nordic (#1D393C).

Technically, the mix leans on its blue channel (rgb(33, 53, 58)), which gives #21353A its character. Accessibility-wise, white text works best on #21353A: 12.8:1 contrast (passing WCAG AAA) versus 1.6:1 for black. On paper it relies strongly on black ink (K:77), 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.

#21353A color variations

View this color variations of tints, shades, tones and hues.

#21353A color tints

Tints look brighter, pastel, and less intense.
#21353A

Color has no name
#40656F

Color has no name
#5F95A3

Color has no name
#94B8C1

Color has no name
#C9DBE0

Color has no name
White

#FFFFFF

#21353A color shades

Shades look darker, richer, and more solid.
#21353A

Color has no name
#1A2A2E

Color has no name
#142022

Color has no name
#0D1517

Color has no name
#060A0B

Color has no name
Black

#000000

#21353A color tones

Tones looks more sophisticated and complex than base colors.
#21353A

Color has no name
#30464B

Color has no name
#41565B

Color has no name
#546569

Color has no name
#697275

Color has no name
Grey

#808080

#21353A color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#2B213A

Color has no name
#21213A

Color has no name
#212B3A

Color has no name
#21353A

Color has no name
#213A35

Color has no name
#213A2B

Color has no name
#213A21

Color has no name

#21353A 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.

Complementary color schemes
#21353A
#21353A

Color has no name

#3A2622
#3A2622

Color has no name

Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme
#21353A
#21353A

Color has no name

#3A3322
#3A3322

Color has no name

#3A2229
#3A2229

Color has no name

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.

Analogous color scheme
#22293A
#22293A

Color has no name

#21353A
#21353A

Color has no name

#223A33
#223A33

Color has no name

Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme
#21353A
#21353A

Color has no name

#3A2235
#3A2235

Color has no name

#353A22
#353A22

Color has no name

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme
#21353A
#21353A

Color has no name

#26223A
#26223A

Color has no name

#3A2622
#3A2622

Color has no name

#353A22
#353A22

Color has no name

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme
#21353A
#21353A

Color has no name

#33223A
#33223A

Color has no name

#3A2622
#3A2622

Color has no name

#293A22
#293A22

Color has no name

Nearest named colors to #21353A

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Goryeo Storeroom color link
Goryeo Storeroom

#203838

Dark Slate Grey color link
Dark Slate Grey

#25383C

Nordic color link
Nordic

#1D393C

Elephant color link
Elephant

#243640

Allegro color link
Allegro

#242E3B

Coast color link
Coast

#243442

Gunmetal color link
Gunmetal

#2A3439

Dark Knight color link
Dark Knight

#232D36

Tornado color link
Tornado

#272D3C

Traccia color link
Traccia

#2A3335

Mosaic color link
Mosaic

#293741

Iron Storage color link
Iron Storage

#2B3736

#21353A color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

#21353A color image #21353A color ORCN HD wallpaper 3840x2160 (Desktop)
#21353A color image #21353A color ORCN HD wallpaper 1170x2532 (Mobile)
#21353A color image #21353A color solid HD wallpaper 3840x2160 (Desktop)
#21353A color image #21353A color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21353A
  • RGB33, 53, 58
  • CMYK10, 2, 0, 77
  • CSSrgb(33, 53, 58)
  • HSL192°, 27%, 18%
  • HSL Precise192°, 27.473%, 17.843%
  • HSV192°, 43%, 23%
  • HSB192°, 43%, 23%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.208
  • Normalized B (0.0–1.0)0.227
  • GLSLvec3(0.129, 0.208, 0.227)
  • GLSL with alphavec4(0.129, 0.208, 0.227, 1.000)
  • HLSL / Metalfloat3(0.129, 0.208, 0.227)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB20.8%
  • Percentage of Blue in RGB22.7%
  • Color Family (Hue)Cyan
  • Saturation FamilyMild Saturation
  • Lightness FamilyDark
  • HEX ID21353A
  • DECIMAL ID2176314
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01

Copyright © 2021-2026 The Official Register of Color Names. All Rights Reserved.