Information about #21405D color

#21405D color image

Basic facts about this digital color

In the Register's classification, #21405D belongs to the Azure Color Family, featuring Moderate Saturation and Dark brightness. The mix behind it: rgb(33, 64, 93) — 12.9% red, 25.1% green, 36.5% blue; the print equivalent is CMYK 24 / 11 / 0 / 64. Curious how these numbers work? Read our RGB color codes guide.

The color #21405D reads as a pleasantly vivid sky-leaning azure and carries a shadowy depth. Expect to see shades like this in night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is almost identical to Shipshape (#21425F). Nearby in the Register you will also find Regal Blue (#203F58) and Astronaut Blue (#214559).

The recipe behind #21405D is rgb(33, 64, 93), with blue as the dominant ingredient. If you plan to put text on a #21405D background, choose white — the contrast ratio is 10.7:1 (passing WCAG AAA), while black manages only 2.0:1. For print, note the heavy black component (K:64) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #21405D is still unnamed — it can be claimed and named in The Official Register of Color Names.

#21405D color variations

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

#21405D color tints

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

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#356796

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#558EC3

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#8DB3D7

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#C6D9EB

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White

#FFFFFF

#21405D color shades

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

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#1A334B

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#132638

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#0D1925

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#060C12

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Black

#000000

#21405D color tones

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

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#2F4D69

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#3F5A72

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#526679

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#67737D

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Grey

#808080

#21405D color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#4A215E

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#32215E

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#21285E

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#21405D

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#21595E

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#215E4A

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#215E32

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#21405D 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
#21405D
#21405D

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#5E3F21
#5E3F21

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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
#21405D
#21405D

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#5E5D21
#5E5D21

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#5E2122
#5E2122

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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
#21225E
#21225E

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#21405D
#21405D

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#215E5D
#215E5D

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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
#21405D
#21405D

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#5E2141
#5E2141

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#415E21
#415E21

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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
#21405D
#21405D

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#3F215E
#3F215E

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#5E3F21
#5E3F21

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#415E21
#415E21

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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
#21405D
#21405D

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#5D215E
#5D215E

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#5E3F21
#5E3F21

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#225E21
#225E21

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Nearest named colors to #21405D

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

Filmpro Pthalo Blue color link
Filmpro Pthalo Blue

#2B3860

#21405D color backgrounds & wallpapers

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

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

Conversions between color systems and etc.

  • HEX#21405D
  • RGB33, 64, 93
  • CMYK24, 11, 0, 64
  • CSSrgb(33, 64, 93)
  • HSL209°, 48%, 25%
  • HSL Precise209°, 47.619%, 24.706%
  • HSV209°, 65%, 36%
  • HSB209°, 65%, 36%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.251
  • Normalized B (0.0–1.0)0.365
  • GLSLvec3(0.129, 0.251, 0.365)
  • GLSL with alphavec4(0.129, 0.251, 0.365, 1.000)
  • HLSL / Metalfloat3(0.129, 0.251, 0.365)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB25.1%
  • Percentage of Blue in RGB36.5%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID21405D
  • DECIMAL ID2179165
  • Name LengthThis color has no name
  • Seen by search & AI crawlers16 times
  • Counting from2025-01-01

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