Information about #183A4F color

#183A4F color image

Basic facts about this digital color

In the Register's classification, #183A4F belongs to the Azure Color Family, featuring Moderate Saturation and Dark brightness. In numbers: rgb(24, 58, 79) (9.4% red, 22.7% green, 31% blue), or CMYK 22 / 8 / 0 / 69 for print. Curious how these numbers work? Read our RGB color codes guide.

#183A4F presents itself as a clearly saturated steel-blue azure — one 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 almost identical to Dark Blue Grey (#1F3B4D). Its next-closest registered neighbors are Barometer (#11394C) and Nationalist Blue (#174358).

In RGB terms — rgb(24, 58, 79) — the blue channel does the heavy lifting here. If you plan to put text on a #183A4F background, choose white — the contrast ratio is 12.0:1 (passing WCAG AAA), while black manages only 1.8:1. For print, note the heavy black component (K:69) — ink coverage matters with tones this deep. No one has named #183A4F so far. Register a name for it and it becomes a permanent record.

#183A4F color variations

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

#183A4F color tints

Tints look brighter, pastel, and less intense.
#183A4F

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#2B678C

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#4393C5

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#82B7D8

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#C0DBEB

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White

#FFFFFF

#183A4F color shades

Shades look darker, richer, and more solid.
#183A4F

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#132D3E

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#0E222E

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#09161F

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#040B0F

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Black

#000000

#183A4F color tones

Tones looks more sophisticated and complex than base colors.
#183A4F

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#26485E

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#37576B

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#4C6575

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#64727C

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Grey

#808080

#183A4F color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#37174E

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#21174E

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#17234E

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#183A4F

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#174E4D

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#174E37

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#174E21

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#183A4F 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
#183A4F
#183A4F

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#4E2D18
#4E2D18

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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
#183A4F
#183A4F

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#4E4818
#4E4818

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#4E181E
#4E181E

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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
#181E4E
#181E4E

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#183A4F
#183A4F

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#184E48
#184E48

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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
#183A4F
#183A4F

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#4E1839
#4E1839

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#394E18
#394E18

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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
#183A4F
#183A4F

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#2D184E
#2D184E

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#4E2D18
#4E2D18

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#394E18
#394E18

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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
#183A4F
#183A4F

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#48184E
#48184E

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#4E2D18
#4E2D18

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#1E4E18
#1E4E18

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Nearest named colors to #183A4F

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

Dark Blue Grey color link
Dark Blue Grey

#1F3B4D

Barometer color link
Barometer

#11394C

Nationalist Blue color link
Nationalist Blue

#174358

Regal Blue color link
Regal Blue

#203F58

Cello color link
Cello

#1E385B

Nile Blue color link
Nile Blue

#253F4E

Tarawera color link
Tarawera

#253C48

Tiber color link
Tiber

#184343

Regatta color link
Regatta

#192C49

Billabong color link
Billabong

#173141

Midnight Oil color link
Midnight Oil

#283854

ORPIN BLUE color link
ORPIN BLUE

#122B4A

#183A4F color backgrounds & wallpapers

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

#183A4F color image #183A4F color ORCN HD wallpaper 3840x2160 (Desktop)
#183A4F color image #183A4F color ORCN HD wallpaper 1170x2532 (Mobile)
#183A4F color image #183A4F color solid HD wallpaper 3840x2160 (Desktop)
#183A4F color image #183A4F color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#183A4F
  • RGB24, 58, 79
  • CMYK22, 8, 0, 69
  • CSSrgb(24, 58, 79)
  • HSL203°, 53%, 20%
  • HSL Precise202.909°, 53.398%, 20.196%
  • HSV203°, 70%, 31%
  • HSB203°, 70%, 31%
  • Normalized R (0.0–1.0)0.094
  • Normalized G (0.0–1.0)0.227
  • Normalized B (0.0–1.0)0.310
  • GLSLvec3(0.094, 0.227, 0.310)
  • GLSL with alphavec4(0.094, 0.227, 0.310, 1.000)
  • HLSL / Metalfloat3(0.094, 0.227, 0.310)
  • Percentage of Red in RGB9.4%
  • Percentage of Green in RGB22.7%
  • Percentage of Blue in RGB31%
  • Color FamilyAzure
  • Saturation FamilyModerate Saturation
  • Lightness FamilyDark
  • HEX ID183A4F
  • DECIMAL ID1587791
  • Name LengthThis color has no name
  • Seen by search & AI crawlers15 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.