Information about #21155E color

#21155E color image

Basic facts about this digital color

In the Register's classification, #21155E belongs to the Blue Color Family, featuring High Saturation and Dark brightness. The mix behind it: rgb(33, 21, 94) — 12.9% red, 8.2% green, 36.9% blue; the print equivalent is CMYK 24 / 29 / 0 / 63. Curious how these numbers work? Read our RGB color codes guide.

#21155E is a strongly colored classic blue that leans clearly toward the dark side. It is a natural fit for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is a hair away from Suns Purple (#1D1160). Its next-closest registered neighbors are Dark Indigo (#1F0954) and Royal Indigo (#240952).

Technically, the mix leans on its blue channel (rgb(33, 21, 94)), which gives #21155E its character. If you plan to put text on a #21155E background, choose white — the contrast ratio is 15.7:1 (passing WCAG AAA), while black manages only 1.3:1. On paper it relies strongly on black ink (K:63), so proof dark layouts before a large print run. No one has named #21155E so far. Register a name for it and it becomes a permanent record.

#21155E color variations

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

#21155E color tints

Tints look brighter, pastel, and less intense.
#21155E

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#38249F

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#573ED3

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#8F7EE1

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#C7BEF0

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White

#FFFFFF

#21155E color shades

Shades look darker, richer, and more solid.
#21155E

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#1B114C

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#140D39

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#0D0826

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#060413

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Black

#000000

#21155E color tones

Tones looks more sophisticated and complex than base colors.
#21155E

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#30236C

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#403576

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#534A7D

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#686380

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Grey

#808080

#21155E color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#5F1544

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#5D155F

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#3F155F

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#21155E

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#15265F

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#15445F

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#155F5D

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#21155E 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
#21155E
#21155E

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#536016
#536016

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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
#21155E
#21155E

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#2E6016
#2E6016

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#604716
#604716

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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
#471660
#471660

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#21155E
#21155E

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#162E60
#162E60

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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
#21155E
#21155E

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#602216
#602216

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#166022
#166022

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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
#21155E
#21155E

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#601653
#601653

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#536016
#536016

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#166022
#166022

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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
#21155E
#21155E

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#60162E
#60162E

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#536016
#536016

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#166047
#166047

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Nearest named colors to #21155E

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

Suns Purple color link
Suns Purple

#1D1160

Dark Indigo color link
Dark Indigo

#1F0954

Royal Indigo color link
Royal Indigo

#240952

Jenniebear Blue color link
Jenniebear Blue

#111154

Midnight Blue color link
Midnight Blue

#191970

Tottenham Navy color link
Tottenham Navy

#132257

Blast Off color link
Blast Off

#262857

OSS Blue color link
OSS Blue

#1B2450

PHCH color link
PHCH

#201173

Deep Blue Violet color link
Deep Blue Violet

#210059

Dark Persian Blue color link
Dark Persian Blue

#2D2759

Paua color link
Paua

#2A2551

#21155E color backgrounds & wallpapers

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

#21155E color image #21155E color ORCN HD wallpaper 3840x2160 (Desktop)
#21155E color image #21155E color ORCN HD wallpaper 1170x2532 (Mobile)
#21155E color image #21155E color solid HD wallpaper 3840x2160 (Desktop)
#21155E color image #21155E color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21155E
  • RGB33, 21, 94
  • CMYK24, 29, 0, 63
  • CSSrgb(33, 21, 94)
  • HSL250°, 63%, 23%
  • HSL Precise249.863°, 63.478%, 22.549%
  • HSV250°, 78%, 37%
  • HSB250°, 78%, 37%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.082
  • Normalized B (0.0–1.0)0.369
  • GLSLvec3(0.129, 0.082, 0.369)
  • GLSL with alphavec4(0.129, 0.082, 0.369, 1.000)
  • HLSL / Metalfloat3(0.129, 0.082, 0.369)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB8.2%
  • Percentage of Blue in RGB36.9%
  • Color FamilyBlue
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID21155E
  • DECIMAL ID2168158
  • Name LengthThis color has no name
  • Seen by search & AI crawlers25 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.