Information about #21A1B5 color

#21A1B5 color image

Basic facts about this digital color

In the Register's classification, #21A1B5 belongs to the Cyan Color Family, featuring High Saturation and Light brightness. The mix behind it: rgb(33, 161, 181) — 12.9% red, 63.1% green, 71% blue; the print equivalent is CMYK 58 / 8 / 0 / 29. Curious how these numbers work? Read our RGB color codes guide.

The color #21A1B5 reads as a vivid, lively cyan and sits on the lighter side of the spectrum. Expect to see shades like this in bold branding moments and attention-grabbing details. In The Official Register of Color Names it is almost identical to Pelorous (#2599B2). Nearby in the Register you will also find Light Sea Green (#20B2AA) and Homebox Blue (#36A2B9).

Technically, the mix leans on its blue channel (rgb(33, 161, 181)), which gives #21A1B5 its character. If you plan to put text on a #21A1B5 background, choose black — the contrast ratio is 6.8:1 (passing WCAG AA), while white manages only 3.1:1. Out of 16,777,216 possible colors, #21A1B5 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21A1B5 color variations

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

#21A1B5 color tints

Tints look brighter, pastel, and less intense.
#21A1B5

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#37C4DA

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#69D3E3

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#9BE1EC

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#CDF0F5

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White

#FFFFFF

#21A1B5 color shades

Shades look darker, richer, and more solid.
#21A1B5

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#1A8190

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#13606C

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#0D4048

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#062024

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Black

#000000

#21A1B5 color tones

Tones looks more sophisticated and complex than base colors.
#21A1B5

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#319CAC

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#4396A2

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#568F98

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#6A878C

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Grey

#808080

#21A1B5 color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#5221B4

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#212BB4

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#2166B4

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#21A1B5

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#21B48D

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#21B452

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#2BB421

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#21A1B5 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
#21A1B5
#21A1B5

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#B53521
#B53521

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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
#21A1B5
#21A1B5

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#B57F21
#B57F21

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#B52157
#B52157

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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
#2157B5
#2157B5

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#21A1B5
#21A1B5

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#21B57F
#21B57F

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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
#21A1B5
#21A1B5

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#B521A1
#B521A1

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#A1B521
#A1B521

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Tetradic

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

Tetradic color scheme
#21A1B5
#21A1B5

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#3521B5
#3521B5

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#B53521
#B53521

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#A1B521
#A1B521

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Square

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

Square color scheme
#21A1B5
#21A1B5

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#7F21B5
#7F21B5

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#B53521
#B53521

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#57B521
#57B521

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Nearest named colors to #21A1B5

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

Pelorous color link
Pelorous

#2599B2

Light Sea Green color link
Light Sea Green

#20B2AA

Homebox Blue color link
Homebox Blue

#36A2B9

Pacific Blue color link
Pacific Blue

#1CA9C9

Blue Green color link
Blue Green

#0D98BA

Freefall color link
Freefall

#1D95C9

Boy Red color link
Boy Red

#0E9CA5

Spring Teal color link
Spring Teal

#0EA7A5

Ball Blue color link
Ball Blue

#21ABCD

Douban Blue color link
Douban Blue

#2496CD

Peacock color link
Peacock

#33A1C9

Cyan Cornflower Blue color link
Cyan Cornflower Blue

#188BC2

#21A1B5 color backgrounds & wallpapers

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

#21A1B5 color image #21A1B5 color ORCN HD wallpaper 3840x2160 (Desktop)
#21A1B5 color image #21A1B5 color ORCN HD wallpaper 1170x2532 (Mobile)
#21A1B5 color image #21A1B5 color solid HD wallpaper 3840x2160 (Desktop)
#21A1B5 color image #21A1B5 color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21A1B5
  • RGB33, 161, 181
  • CMYK58, 8, 0, 29
  • CSSrgb(33, 161, 181)
  • HSL188°, 69%, 42%
  • HSL Precise188.108°, 69.159%, 41.961%
  • HSV188°, 82%, 71%
  • HSB188°, 82%, 71%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.631
  • Normalized B (0.0–1.0)0.710
  • GLSLvec3(0.129, 0.631, 0.710)
  • GLSL with alphavec4(0.129, 0.631, 0.710, 1.000)
  • HLSL / Metalfloat3(0.129, 0.631, 0.710)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB63.1%
  • Percentage of Blue in RGB71%
  • Color FamilyCyan
  • Saturation FamilyHigh Saturation
  • Lightness FamilyLight
  • HEX ID21A1B5
  • DECIMAL ID2204085
  • Name LengthThis color has no name
  • Seen by search & AI crawlers22 times
  • Counting from2025-01-01

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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.