Information about #181E21 color

#181E21 color image

Basic facts about this digital color

In the Register's classification, #181E21 belongs to the Azure Color Family, featuring Low Saturation and Dark brightness. In numbers: rgb(24, 30, 33) (9.4% red, 11.8% green, 12.9% blue), or CMYK 4 / 1 / 0 / 87 for print. Curious how these numbers work? Read our RGB color codes guide.

A gently muted azure, #181E21 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 practically indistinguishable from Cyanish Black (#1A1D1D). Nearby in the Register you will also find Chimney Sweep (#1C1D1F) and Aesthetic Black (#1C1C1E).

Technically, the mix leans on its blue channel (rgb(24, 30, 33)), which gives #181E21 its character. If you plan to put text on a #181E21 background, choose white — the contrast ratio is 16.8:1 (passing WCAG AAA), while black manages only 1.2:1. On paper it relies strongly on black ink (K:87), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #181E21 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#181E21 color variations

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

#181E21 color tints

Tints look brighter, pastel, and less intense.
#181E21

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#3D4D55

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#637D89

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#95A9B2

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#CAD4D8

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White

#FFFFFF

#181E21 color shades

Shades look darker, richer, and more solid.
#181E21

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#12171A

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#0E1113

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#090B0D

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#040506

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Black

#000000

#181E21 color tones

Tones looks more sophisticated and complex than base colors.
#181E21

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#293136

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#3D464A

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#52595D

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#686C6F

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Grey

#808080

#181E21 color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#1C1720

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#181720

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#171920

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#181E21

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#17201F

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#17201C

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#172018

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#181E21 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
#181E21
#181E21

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#211B18
#211B18

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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
#181E21
#181E21

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#211F18
#211F18

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#211819
#211819

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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
#181921
#181921

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#181E21
#181E21

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#18211F
#18211F

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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
#181E21
#181E21

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#21181E
#21181E

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#1E2118
#1E2118

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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
#181E21
#181E21

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#1B1821
#1B1821

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#211B18
#211B18

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#1E2118
#1E2118

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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
#181E21
#181E21

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#1F1821
#1F1821

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#211B18
#211B18

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#192118
#192118

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Nearest named colors to #181E21

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

Cyanish Black color link
Cyanish Black

#1A1D1D

Chimney Sweep color link
Chimney Sweep

#1C1D1F

Aesthetic Black color link
Aesthetic Black

#1C1C1E

Blackjack color link
Blackjack

#1D2020

Coarse Wool color link
Coarse Wool

#181B26

Bluish Black color link
Bluish Black

#1A1A1D

Dark Jungle Green color link
Dark Jungle Green

#1A2421

Greenish Black color link
Greenish Black

#1A1D1A

Eerie Black color link
Eerie Black

#1B1B1B

Magentaish Black color link
Magentaish Black

#1D1A1D

Very Dark Cyan color link
Very Dark Cyan

#111D1D

Yellowish Black color link
Yellowish Black

#1D1D1A

#181E21 color backgrounds & wallpapers

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

#181E21 color image #181E21 color ORCN HD wallpaper 3840x2160 (Desktop)
#181E21 color image #181E21 color ORCN HD wallpaper 1170x2532 (Mobile)
#181E21 color image #181E21 color solid HD wallpaper 3840x2160 (Desktop)
#181E21 color image #181E21 color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#181E21
  • RGB24, 30, 33
  • CMYK4, 1, 0, 87
  • CSSrgb(24, 30, 33)
  • HSL200°, 16%, 11%
  • HSL Precise200°, 15.789%, 11.176%
  • HSV200°, 27%, 13%
  • HSB200°, 27%, 13%
  • Normalized R (0.0–1.0)0.094
  • Normalized G (0.0–1.0)0.118
  • Normalized B (0.0–1.0)0.129
  • GLSLvec3(0.094, 0.118, 0.129)
  • GLSL with alphavec4(0.094, 0.118, 0.129, 1.000)
  • HLSL / Metalfloat3(0.094, 0.118, 0.129)
  • Percentage of Red in RGB9.4%
  • Percentage of Green in RGB11.8%
  • Percentage of Blue in RGB12.9%
  • Color Family (Hue)Azure
  • Saturation FamilyLow Saturation
  • Lightness FamilyDark
  • HEX ID181E21
  • DECIMAL ID1580577
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01

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