Information about #21178B color

#21178B color image

Basic facts about this digital color

The digital color #21178B is classified in the Register under the Blue Color Family, with High Saturation and Neutral brightness. In numbers: rgb(33, 23, 139) (12.9% red, 9% green, 54.5% blue), or CMYK 42 / 45 / 0 / 45 for print. New to color codes? See our guide to RGB color codes.

#21178B is a energetic, saturated deep-sea blue that sits comfortably between light and dark. In practice it works well for logos, highlights and anything that needs to be noticed first. In The Official Register of Color Names it is almost identical to Jacksons Purple (#20208D). Nearby in the Register you will also find Elvin (#2A128A) and Denim Dark Blue (#151B8D).

The recipe behind #21178B is rgb(33, 23, 139), with blue as the dominant ingredient. On this background, white text reaches a 13.5:1 contrast ratio (passing WCAG AAA); black stays at 1.6:1. No one has named #21178B so far. Register a name for it and it becomes a permanent record.

#21178B color variations

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

#21178B color tints

Tints look brighter, pastel, and less intense.
#21178B

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#2E20C8

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#584CE1

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#9087EB

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#C7C3F5

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White

#FFFFFF

#21178B color shades

Shades look darker, richer, and more solid.
#21178B

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#1A1270

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#130D54

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#0D0938

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#06041C

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Black

#000000

#21178B color tones

Tones looks more sophisticated and complex than base colors.
#21178B

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#2F268F

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#3F388F

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#524D8C

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#686587

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Grey

#808080

#21178B color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#8C166B

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#7E168C

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#4F168C

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#21178B

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#163C8C

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#166B8C

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#168C7E

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#21178B 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
#21178B
#21178B

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#838C17
#838C17

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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
#21178B
#21178B

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#488C17
#488C17

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#8C5B17
#8C5B17

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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
#5B178C
#5B178C

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#21178B
#21178B

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#17488C
#17488C

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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
#21178B
#21178B

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#8C2117
#8C2117

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#178C21
#178C21

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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
#21178B
#21178B

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#8C1783
#8C1783

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#838C17
#838C17

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#178C21
#178C21

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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
#21178B
#21178B

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#8C1748
#8C1748

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#838C17
#838C17

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#178C5B
#178C5B

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Nearest named colors to #21178B

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

Jacksons Purple color link
Jacksons Purple

#20208D

Elvin color link
Elvin

#2A128A

Denim Dark Blue color link
Denim Dark Blue

#151B8D

Luxury Blue color link
Luxury Blue

#1F2B8F

Filmpro Digital Blue color link
Filmpro Digital Blue

#2D2480

Picotee Blue color link
Picotee Blue

#2E2787

Taylor Blue color link
Taylor Blue

#111398

Royal color link
Royal

#0C1793

Persian Indigo color link
Persian Indigo

#32127A

PHCH color link
PHCH

#201173

Pixie Powder color link
Pixie Powder

#391285

NELLE color link
NELLE

#332299

#21178B color backgrounds & wallpapers

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

#21178B color image #21178B color ORCN HD wallpaper 3840x2160 (Desktop)
#21178B color image #21178B color ORCN HD wallpaper 1170x2532 (Mobile)
#21178B color image #21178B color solid HD wallpaper 3840x2160 (Desktop)
#21178B color image #21178B color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#21178B
  • RGB33, 23, 139
  • CMYK42, 45, 0, 45
  • CSSrgb(33, 23, 139)
  • HSL245°, 72%, 32%
  • HSL Precise245.172°, 71.605%, 31.765%
  • HSV245°, 83%, 55%
  • HSB245°, 83%, 55%
  • Normalized R (0.0–1.0)0.129
  • Normalized G (0.0–1.0)0.090
  • Normalized B (0.0–1.0)0.545
  • GLSLvec3(0.129, 0.090, 0.545)
  • GLSL with alphavec4(0.129, 0.090, 0.545, 1.000)
  • HLSL / Metalfloat3(0.129, 0.090, 0.545)
  • Percentage of Red in RGB12.9%
  • Percentage of Green in RGB9%
  • Percentage of Blue in RGB54.5%
  • Color FamilyBlue
  • Saturation FamilyHigh Saturation
  • Lightness FamilyNeutral
  • HEX ID21178B
  • DECIMAL ID2168715
  • Name LengthThis color has no name
  • Seen by search & AI crawlers12 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.