Information about #51BDEF color

#51BDEF color image

Basic facts about this digital color

In the Register's classification, #51BDEF belongs to the Azure Color Family, featuring High Saturation and Very Light brightness. In numbers: rgb(81, 189, 239) (31.8% red, 74.1% green, 93.7% blue), or CMYK 62 / 20 / 0 / 6 for print. New to color codes? See our guide to RGB color codes.

A strongly colored sky-leaning azure, #51BDEF appears airy and pastel-like. Designers typically reach for tones like this for clean interfaces where content needs room to breathe. In The Official Register of Color Names it is practically indistinguishable from Brilliant Cerulean (#51C2E7). Its next-closest registered neighbors are Brilliant Cornflower Blue (#51AFE7) and Picton Blue (#45B1E8).

The recipe behind #51BDEF is rgb(81, 189, 239), with blue as the dominant ingredient. If you plan to put text on a #51BDEF background, choose black — the contrast ratio is 9.9:1 (passing WCAG AAA), while white manages only 2.1:1. No one has named #51BDEF so far. Register a name for it and it becomes a permanent record.

#51BDEF color variations

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

#51BDEF color tints

Tints look brighter, pastel, and less intense.
#51BDEF

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#74CAF2

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#97D7F5

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#B9E4F8

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#DCF1FB

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White

#FFFFFF

#51BDEF color shades

Shades look darker, richer, and more solid.
#51BDEF

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#17A7E9

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#107DB0

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#0A5375

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#05293A

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Black

#000000

#51BDEF color tones

Tones looks more sophisticated and complex than base colors.
#51BDEF

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#56B2DD

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#5DA7C8

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#669AB2

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#728D9A

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Grey

#808080

#51BDEF color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#A352EE

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#6452EE

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#527EEE

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#51BDEF

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#52EEE1

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#52EEA3

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#52EE64

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#51BDEF 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
#51BDEF
#51BDEF

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#EF8452
#EF8452

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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
#51BDEF
#51BDEF

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#EFD252
#EFD252

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#EF526F
#EF526F

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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
#526FEF
#526FEF

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#51BDEF
#51BDEF

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#52EFD2
#52EFD2

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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
#51BDEF
#51BDEF

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#EF52BD
#EF52BD

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#BDEF52
#BDEF52

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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
#51BDEF
#51BDEF

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#8452EF
#8452EF

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#EF8452
#EF8452

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#BDEF52
#BDEF52

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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
#51BDEF
#51BDEF

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#D252EF
#D252EF

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#EF8452
#EF8452

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#6FEF52
#6FEF52

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Nearest named colors to #51BDEF

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

Brilliant Cerulean color link
Brilliant Cerulean

#51C2E7

Brilliant Cornflower Blue color link
Brilliant Cornflower Blue

#51AFE7

Picton Blue color link
Picton Blue

#45B1E8

Spring Sky color link
Spring Sky

#3FB8F1

Jan Blue color link
Jan Blue

#48CAE4

Blue Jeans color link
Blue Jeans

#5DADEC

Brilliant Arctic Blue color link
Brilliant Arctic Blue

#51D5E7

Malibu color link
Malibu

#66B7E1

Light Brilliant Cornflower Blue color link
Light Brilliant Cornflower Blue

#65C5FF

Light Brilliant Azure color link
Light Brilliant Azure

#65B2FF

Argentinian Blue color link
Argentinian Blue

#6CB4EE

Caps Blue color link
Caps Blue

#68B1E2

#51BDEF color backgrounds & wallpapers

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

#51BDEF color image #51BDEF color ORCN HD wallpaper 3840x2160 (Desktop)
#51BDEF color image #51BDEF color ORCN HD wallpaper 1170x2532 (Mobile)
#51BDEF color image #51BDEF color solid HD wallpaper 3840x2160 (Desktop)
#51BDEF color image #51BDEF color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#51BDEF
  • RGB81, 189, 239
  • CMYK62, 20, 0, 6
  • CSSrgb(81, 189, 239)
  • HSL199°, 83%, 63%
  • HSL Precise198.987°, 83.158%, 62.745%
  • HSV199°, 66%, 94%
  • HSB199°, 66%, 94%
  • Normalized R (0.0–1.0)0.318
  • Normalized G (0.0–1.0)0.741
  • Normalized B (0.0–1.0)0.937
  • GLSLvec3(0.318, 0.741, 0.937)
  • GLSL with alphavec4(0.318, 0.741, 0.937, 1.000)
  • HLSL / Metalfloat3(0.318, 0.741, 0.937)
  • Percentage of Red in RGB31.8%
  • Percentage of Green in RGB74.1%
  • Percentage of Blue in RGB93.7%
  • Color FamilyAzure
  • Saturation FamilyHigh Saturation
  • Lightness FamilyVery Light
  • HEX ID51BDEF
  • DECIMAL ID5357039
  • Name LengthThis color has no name
  • Seen by search & AI crawlers19 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.