Information about #21D9FE color

#21D9FE color image

Basic facts about this digital color

In the Register's classification, #21D9FE belongs to the Cyan Color Family, featuring Full Saturation and Light brightness. In numbers: rgb(33, 217, 254) (12.9% red, 85.1% green, 99.6% blue), or CMYK 87 / 15 / 0 / 0 for print. New to color codes? See our guide to RGB color codes.

A maximally vivid cyan, #21D9FE 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 very close to Lotion Blue (#15F2FD). Its next-closest registered neighbors are be Supernormal. blue (#27BFF1) and Adam Feher Csanadi (#03DBFC).

Technically, the mix leans on its blue channel (rgb(33, 217, 254)), which gives #21D9FE its character. Accessibility-wise, black text works best on #21D9FE: 12.4:1 contrast (passing WCAG AAA) versus 1.7:1 for white. Out of 16,777,216 possible colors, #21D9FE is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21D9FE color variations

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

#21D9FE color tints

Tints look brighter, pastel, and less intense.
#21D9FE

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#4CE0FE

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#79E8FE

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#A6F0FF

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#D2F7FF

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White

#FFFFFF

#21D9FE color shades

Shades look darker, richer, and more solid.
#21D9FE

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#01BEE3

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#018EAB

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#015F72

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#002F39

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Black

#000000

#21D9FE color tones

Tones looks more sophisticated and complex than base colors.
#21D9FE

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#30C9E7

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#42B8CF

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#56A6B6

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#6A939B

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Grey

#808080

#21D9FE color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#7120FE

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#2027FE

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#2080FE

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#21D9FE

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#20FECA

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#20FE71

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#27FE20

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#21D9FE 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
#21D9FE
#21D9FE

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#FE4520
#FE4520

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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
#21D9FE
#21D9FE

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#FEB420
#FEB420

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#FE206A
#FE206A

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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
#206AFE
#206AFE

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#21D9FE
#21D9FE

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#20FEB4
#20FEB4

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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
#21D9FE
#21D9FE

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#FE20D9
#FE20D9

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#D9FE20
#D9FE20

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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
#21D9FE
#21D9FE

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#4520FE
#4520FE

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#FE4520
#FE4520

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#D9FE20
#D9FE20

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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
#21D9FE
#21D9FE

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#B420FE
#B420FE

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#FE4520
#FE4520

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#6AFE20
#6AFE20

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Nearest named colors to #21D9FE

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

Lotion Blue color link
Lotion Blue

#15F2FD

be Supernormal. blue color link
be Supernormal. blue

#27BFF1

Adam Feher Csanadi color link
Adam Feher Csanadi

#03DBFC

Bright Light Blue color link
Bright Light Blue

#26F7FD

Spiro Disco Ball color link
Spiro Disco Ball

#0FC0FC

Neon Aqua color link
Neon Aqua

#21F8F6

Luminous Vivid Arctic Blue color link
Luminous Vivid Arctic Blue

#00DFFF

Fluorescent Blue color link
Fluorescent Blue

#15F4EE

Bright Sky Blue color link
Bright Sky Blue

#02CCFE

be Supernormal. teal color link
be Supernormal. teal

#27F1E7

Celestial Palmer color link
Celestial Palmer

#02E5F5

Vivid Sky Blue color link
Vivid Sky Blue

#00CCFF

#21D9FE color backgrounds & wallpapers

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

#21D9FE color image #21D9FE color ORCN HD wallpaper 3840x2160 (Desktop)
#21D9FE color image #21D9FE color ORCN HD wallpaper 1170x2532 (Mobile)
#21D9FE color image #21D9FE color solid HD wallpaper 3840x2160 (Desktop)
#21D9FE color image #21D9FE color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21D9FE
  • RGB33, 217, 254
  • CMYK87, 15, 0, 0
  • CSSrgb(33, 217, 254)
  • HSL190°, 99%, 56%
  • HSL Precise190.045°, 99.103%, 56.275%
  • HSV190°, 87%, 100%
  • HSB190°, 87%, 100%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.851
  • Normalized B (0.0–1.0)0.996
  • GLSLvec3(0.129, 0.851, 0.996)
  • GLSL with alphavec4(0.129, 0.851, 0.996, 1.000)
  • HLSL / Metalfloat3(0.129, 0.851, 0.996)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB85.1%
  • Percentage of Blue in RGB99.6%
  • Color FamilyCyan
  • Saturation FamilyFull Saturation
  • Lightness FamilyLight
  • HEX ID21D9FE
  • DECIMAL ID2218494
  • Name LengthThis color has no name
  • Seen by search & AI crawlers12 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.