Information about #21A5AB color

#21A5AB color image

Basic facts about this digital color

#21A5AB falls into the Cyan Color Family — High Saturation, Light brightness. Its exact recipe is rgb(33, 165, 171) — 12.9% red, 64.7% green, 67.1% blue — and for print it converts to CMYK 54 / 2 / 0 / 33. New to color codes? See our guide to RGB color codes.

The color #21A5AB reads as a energetic, saturated water-like cyan and feels open and friendly. Designers typically reach for tones like this for accents, call-to-action elements and statement visuals. In The Official Register of Color Names it is a near neighbor of Light Sea Green (#20B2AA). Its next-closest registered neighbors are Pelorous (#2599B2) and Spring Teal (#0EA7A5).

In RGB terms — rgb(33, 165, 171) — the blue channel does the heavy lifting here. Accessibility-wise, black text works best on #21A5AB: 7.0:1 contrast (passing WCAG AAA) versus 3.0:1 for white. Out of 16,777,216 possible colors, #21A5AB is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21A5AB color variations

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

#21A5AB color tints

Tints look brighter, pastel, and less intense.
#21A5AB

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#31CFD7

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#64DBE1

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#98E7EB

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#CBF3F5

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White

#FFFFFF

#21A5AB color shades

Shades look darker, richer, and more solid.
#21A5AB

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#1A8389

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#136266

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#0D4144

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#062022

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Black

#000000

#21A5AB color tones

Tones looks more sophisticated and complex than base colors.
#21A5AB

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#309FA5

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#42999D

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#559295

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#69898B

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Grey

#808080

#21A5AB color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#4320AB

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#2035AB

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#206CAB

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#21A5AB

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#20AB7A

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#20AB43

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#35AB20

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#21A5AB 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
#21A5AB
#21A5AB

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#AB2821
#AB2821

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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
#21A5AB
#21A5AB

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#AB6D21
#AB6D21

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#AB215F
#AB215F

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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
#215FAB
#215FAB

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#21A5AB
#21A5AB

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#21AB6D
#21AB6D

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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
#21A5AB
#21A5AB

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#AB21A4
#AB21A4

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#A4AB21
#A4AB21

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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
#21A5AB
#21A5AB

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#2821AB
#2821AB

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#AB2821
#AB2821

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#A4AB21
#A4AB21

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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
#21A5AB
#21A5AB

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#6D21AB
#6D21AB

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#AB2821
#AB2821

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#5FAB21
#5FAB21

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Nearest named colors to #21A5AB

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

Light Sea Green color link
Light Sea Green

#20B2AA

Pelorous color link
Pelorous

#2599B2

Spring Teal color link
Spring Teal

#0EA7A5

Boy Red color link
Boy Red

#0E9CA5

AITriedPume color link
AITriedPume

#13B6A9

Tealish color link
Tealish

#24BCA8

Java color link
Java

#259797

Homebox Blue color link
Homebox Blue

#36A2B9

Blue Green color link
Blue Green

#0D98BA

Scooter color link
Scooter

#308EA0

Celeritas color link
Celeritas

#299792

Keppel color link
Keppel

#3AB09E

#21A5AB color backgrounds & wallpapers

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

#21A5AB color image #21A5AB color ORCN HD wallpaper 3840x2160 (Desktop)
#21A5AB color image #21A5AB color ORCN HD wallpaper 1170x2532 (Mobile)
#21A5AB color image #21A5AB color solid HD wallpaper 3840x2160 (Desktop)
#21A5AB color image #21A5AB color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21A5AB
  • RGB33, 165, 171
  • CMYK54, 2, 0, 33
  • CSSrgb(33, 165, 171)
  • HSL183°, 68%, 40%
  • HSL Precise182.609°, 67.647%, 40%
  • HSV183°, 81%, 67%
  • HSB183°, 81%, 67%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.647
  • Normalized B (0.0–1.0)0.671
  • GLSLvec3(0.129, 0.647, 0.671)
  • GLSL with alphavec4(0.129, 0.647, 0.671, 1.000)
  • HLSL / Metalfloat3(0.129, 0.647, 0.671)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB64.7%
  • Percentage of Blue in RGB67.1%
  • Color FamilyCyan
  • Saturation FamilyHigh Saturation
  • Lightness FamilyLight
  • HEX ID21A5AB
  • DECIMAL ID2205099
  • Name LengthThis color has no name
  • Seen by search & AI crawlers13 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.