Information about #21585F color

#21585F color image

Basic facts about this digital color

#21585F falls into the Cyan Color Family — Moderate Saturation, Neutral brightness. The mix behind it: rgb(33, 88, 95) — 12.9% red, 34.5% green, 37.3% blue; the print equivalent is CMYK 24 / 3 / 0 / 63. New to color codes? See our guide to RGB color codes.

#21585F presents itself as a clearly saturated water-like cyan — one that occupies the middle of the lightness scale. In practice it works well for balanced palettes where no single element should shout. In The Official Register of Color Names it is a hair away from Dark Arctic Blue (#275359). Slightly further away sit Retro (#1B5256) and Dark Opal (#275953).

The recipe behind #21585F is rgb(33, 88, 95), with blue as the dominant ingredient. On this background, white text reaches a 8.0:1 contrast ratio (passing WCAG AAA); black stays at 2.6:1. For print, note the heavy black component (K:63) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #21585F is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21585F color variations

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

#21585F color tints

Tints look brighter, pastel, and less intense.
#21585F

Color has no name
#358B96

Color has no name
#55B6C3

Color has no name
#8DCED7

Color has no name
#C6E6EB

Color has no name
White

#FFFFFF

#21585F color shades

Shades look darker, richer, and more solid.
#21585F

Color has no name
#1A454B

Color has no name
#133438

Color has no name
#0D2225

Color has no name
#061112

Color has no name
Black

#000000

#21585F color tones

Tones looks more sophisticated and complex than base colors.
#21585F

Color has no name
#2F6369

Color has no name
#3F6C72

Color has no name
#527579

Color has no name
#677B7D

Color has no name
Grey

#808080

#21585F color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#34215E

Color has no name
#21265E

Color has no name
#213E5E

Color has no name
#21585F

Color has no name
#215E4D

Color has no name
#215E34

Color has no name
#265E21

Color has no name

#21585F 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
#21585F
#21585F

Color has no name

#5E2821
#5E2821

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
#21585F
#21585F

Color has no name

#5E4721
#5E4721

Color has no name

#5E2139
#5E2139

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
#21395E
#21395E

Color has no name

#21585F
#21585F

Color has no name

#215E47
#215E47

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
#21585F
#21585F

Color has no name

#5E2157
#5E2157

Color has no name

#575E21
#575E21

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
#21585F
#21585F

Color has no name

#28215E
#28215E

Color has no name

#5E2821
#5E2821

Color has no name

#575E21
#575E21

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
#21585F
#21585F

Color has no name

#47215E
#47215E

Color has no name

#5E2821
#5E2821

Color has no name

#395E21
#395E21

Color has no name

Nearest named colors to #21585F

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

Dark Arctic Blue color link
Dark Arctic Blue

#275359

Retro color link
Retro

#1B5256

Dark Opal color link
Dark Opal

#275953

Dark Green Blue color link
Dark Green Blue

#1F6357

Beatnik color link
Beatnik

#1F4F54

Eden color link
Eden

#266255

Lucifer color link
Lucifer

#2E5060

Arapawa color link
Arapawa

#274A5D

Globe color link
Globe

#256761

Marathon color link
Marathon

#305563

Spectra color link
Spectra

#2F5A57

Wanaka color link
Wanaka

#284962

#21585F color backgrounds & wallpapers

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

#21585F color image #21585F color ORCN HD wallpaper 3840x2160 (Desktop)
#21585F color image #21585F color ORCN HD wallpaper 1170x2532 (Mobile)
#21585F color image #21585F color solid HD wallpaper 3840x2160 (Desktop)
#21585F color image #21585F color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21585F
  • RGB33, 88, 95
  • CMYK24, 3, 0, 63
  • CSSrgb(33, 88, 95)
  • HSL187°, 48%, 25%
  • HSL Precise186.774°, 48.438%, 25.098%
  • HSV187°, 65%, 37%
  • HSB187°, 65%, 37%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.345
  • Normalized B (0.0–1.0)0.373
  • GLSLvec3(0.129, 0.345, 0.373)
  • GLSL with alphavec4(0.129, 0.345, 0.373, 1.000)
  • HLSL / Metalfloat3(0.129, 0.345, 0.373)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB34.5%
  • Percentage of Blue in RGB37.3%
  • Color FamilyCyan
  • Saturation FamilyModerate Saturation
  • Lightness FamilyNeutral
  • HEX ID21585F
  • DECIMAL ID2185311
  • Name LengthThis color has no name
  • Seen by search & AI crawlers30 times
  • Counting from2025-01-01

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

ORCN is an independent private organisation that maintains a public register — not a governmental institution or an international standards organisation — in which a name is linked to a specific digital colour code. Registration gives the registrant the exclusive right, within the ORCN register, to have that name recorded against that colour code.

Important: a digital colour itself belongs to no one in law. That right exists only within the ORCN register: registration creates no ownership, trademark, copyright or design rights anywhere. Legal exclusivity outside the register, where it is available at all, arises separately under applicable trademark law and is generally limited to particular goods, services and jurisdictions.