Information about #21387C color

#21387C color image

Basic facts about this digital color

In the Register's classification, #21387C belongs to the Blue Color Family, featuring Moderate Saturation and Neutral brightness. In numbers: rgb(33, 56, 124) (12.9% red, 22% green, 48.6% blue), or CMYK 36 / 27 / 0 / 51 for print. Curious how these numbers work? Read our RGB color codes guide.

A pleasantly vivid classic blue, #21387C sits comfortably between light and dark. Expect to see shades like this in understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is practically indistinguishable from Astronaut (#283A77). Nearby in the Register you will also find Wet N Wild (#254375) and Lapis Blue (#15317E).

The recipe behind #21387C is rgb(33, 56, 124), with blue as the dominant ingredient. If you plan to put text on a #21387C background, choose white — the contrast ratio is 10.9:1 (passing WCAG AAA), while black manages only 1.9:1. Out of 16,777,216 possible colors, #21387C is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21387C color variations

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

#21387C color tints

Tints look brighter, pastel, and less intense.
#21387C

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#2F51B4

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#5876D2

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#8FA4E1

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#C7D1F0

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White

#FFFFFF

#21387C color shades

Shades look darker, richer, and more solid.
#21387C

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#1A2C63

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#13214A

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#0D1631

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#060B18

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Black

#000000

#21387C color tones

Tones looks more sophisticated and complex than base colors.
#21387C

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#2F4481

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#405184

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#535F85

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#686E83

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Grey

#808080

#21387C color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#78217C

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#53217C

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#2E217C

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#21387C

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#215C7C

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#217C78

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#217C53

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#21387C 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
#21387C
#21387C

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#7D6621
#7D6621

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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
#21387C
#21387C

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#667D21
#667D21

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#7D3821
#7D3821

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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
#38217D
#38217D

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#21387C
#21387C

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#21667D
#21667D

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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
#21387C
#21387C

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#7D2138
#7D2138

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#387D21
#387D21

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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
#21387C
#21387C

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#66217D
#66217D

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#7D6621
#7D6621

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#387D21
#387D21

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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
#21387C
#21387C

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#7D2166
#7D2166

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#7D6621
#7D6621

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#217D38
#217D38

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Nearest named colors to #21387C

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

Astronaut color link
Astronaut

#283A77

Wet N Wild color link
Wet N Wild

#254375

Lapis Blue color link
Lapis Blue

#15317E

Zoop De Loop color link
Zoop De Loop

#254683

Submerge color link
Submerge

#113775

Warriors Blue color link
Warriors Blue

#1D428A

Dark Cornflower Blue color link
Dark Cornflower Blue

#26428B

Sea World color link
Sea World

#323F75

Netherlands Blue color link
Netherlands Blue

#21468B

Limitless color link
Limitless

#254B75

Cosmic Cobalt color link
Cosmic Cobalt

#2E2D88

Filmpro Ultramarine Blue color link
Filmpro Ultramarine Blue

#2C3E6B

#21387C color backgrounds & wallpapers

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

#21387C color image #21387C color ORCN HD wallpaper 3840x2160 (Desktop)
#21387C color image #21387C color ORCN HD wallpaper 1170x2532 (Mobile)
#21387C color image #21387C color solid HD wallpaper 3840x2160 (Desktop)
#21387C color image #21387C color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21387C
  • RGB33, 56, 124
  • CMYK36, 27, 0, 51
  • CSSrgb(33, 56, 124)
  • HSL225°, 58%, 31%
  • HSL Precise224.835°, 57.962%, 30.784%
  • HSV225°, 73%, 49%
  • HSB225°, 73%, 49%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.220
  • Normalized B (0.0–1.0)0.486
  • GLSLvec3(0.129, 0.220, 0.486)
  • GLSL with alphavec4(0.129, 0.220, 0.486, 1.000)
  • HLSL / Metalfloat3(0.129, 0.220, 0.486)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB22%
  • Percentage of Blue in RGB48.6%
  • Color Family (Hue)Blue
  • Saturation FamilyModerate Saturation
  • Lightness FamilyNeutral
  • HEX ID21387C
  • DECIMAL ID2177148
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01

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