Information about #21405C color

#21405C color image

Basic facts about this digital color

In the Register's classification, #21405C belongs to the Azure Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(33, 64, 92) (12.9% red, 25.1% green, 36.1% blue), or CMYK 23 / 11 / 0 / 64 for print. New to color codes? See our guide to RGB color codes.

A pleasantly vivid azure, #21405C carries a shadowy depth. Designers typically reach for tones like this for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Shipshape (#21425F). Nearby in the Register you will also find Regal Blue (#203F58) and Astronaut Blue (#214559).

In RGB terms — rgb(33, 64, 92) — the blue channel does the heavy lifting here. If you plan to put text on a #21405C background, choose white — the contrast ratio is 10.8:1 (passing WCAG AAA), while black manages only 2.0:1. On paper it relies strongly on black ink (K:64), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #21405C is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21405C color variations

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

#21405C color tints

Tints look brighter, pastel, and less intense.
#21405C

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#366995

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#568FC2

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#8EB4D6

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#C6D9EA

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White

#FFFFFF

#21405C color shades

Shades look darker, richer, and more solid.
#21405C

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#1B344A

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#142738

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#0D1A25

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#060D12

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Black

#000000

#21405C color tones

Tones looks more sophisticated and complex than base colors.
#21405C

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#2F4E69

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#405A72

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#526779

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#67737D

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Grey

#808080

#21405C color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#49215D

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#31215D

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#21295D

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#21405C

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#21595D

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#215D49

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#215D31

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#21405C 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
#21405C
#21405C

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#5E3E22
#5E3E22

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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
#21405C
#21405C

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#5E5C22
#5E5C22

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#5E2224
#5E2224

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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
#22245E
#22245E

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#21405C
#21405C

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#225E5C
#225E5C

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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
#21405C
#21405C

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#5E2242
#5E2242

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#425E22
#425E22

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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
#21405C
#21405C

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#3E225E
#3E225E

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#5E3E22
#5E3E22

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#425E22
#425E22

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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
#21405C
#21405C

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#5C225E
#5C225E

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#5E3E22
#5E3E22

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#245E22
#245E22

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Nearest named colors to #21405C

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

Shipshape color link
Shipshape

#21425F

Regal Blue color link
Regal Blue

#203F58

Astronaut Blue color link
Astronaut Blue

#214559

Dark Azure color link
Dark Azure

#274059

Blue Clouds color link
Blue Clouds

#273C5A

Cello color link
Cello

#1E385B

Dark Cobalt Blue color link
Dark Cobalt Blue

#273A59

Dark Grey Blue color link
Dark Grey Blue

#29465B

Nationalist Blue color link
Nationalist Blue

#174358

Arapawa color link
Arapawa

#274A5D

Wanaka color link
Wanaka

#284962

Midnight Oil color link
Midnight Oil

#283854

#21405C color backgrounds & wallpapers

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

#21405C color image #21405C color ORCN HD wallpaper 3840x2160 (Desktop)
#21405C color image #21405C color ORCN HD wallpaper 1170x2532 (Mobile)
#21405C color image #21405C color solid HD wallpaper 3840x2160 (Desktop)
#21405C color image #21405C color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21405C
  • RGB33, 64, 92
  • CMYK23, 11, 0, 64
  • CSSrgb(33, 64, 92)
  • HSL208°, 47%, 25%
  • HSL Precise208.475°, 47.2%, 24.51%
  • HSV208°, 64%, 36%
  • HSB208°, 64%, 36%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.251
  • Normalized B (0.0–1.0)0.361
  • GLSLvec3(0.129, 0.251, 0.361)
  • GLSL with alphavec4(0.129, 0.251, 0.361, 1.000)
  • HLSL / Metalfloat3(0.129, 0.251, 0.361)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB25.1%
  • Percentage of Blue in RGB36.1%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID21405C
  • DECIMAL ID2179164
  • Name LengthThis color has no name
  • Seen by search & AI crawlers17 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.