Information about #66181B color

#66181B color image

Basic facts about this digital color

The digital color #66181B is classified in the Register under the Red Color Family, with High Saturation and Dark brightness. Its exact recipe is rgb(102, 24, 27) — 40% red, 9.4% green, 10.6% blue — and for print it converts to CMYK 0 / 31 / 29 / 60. New to color codes? See our guide to RGB color codes.

A strongly colored earthy red, #66181B leans clearly toward the dark side. Designers typically reach for tones like this for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is a hair away from Vintage Maroon (#621D1D). Its next-closest registered neighbors are Philippine Brown (#5D1916) and Persian Plum (#701C1C).

The recipe behind #66181B is rgb(102, 24, 27), with red as the dominant ingredient. If you plan to put text on a #66181B background, choose white — the contrast ratio is 12.3:1 (passing WCAG AAA), while black manages only 1.7:1. For print, note the heavy black component (K:60) — ink coverage matters with tones this deep. No one has named #66181B so far. Register a name for it and it becomes a permanent record.

#66181B color variations

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

#66181B color tints

Tints look brighter, pastel, and less intense.
#66181B

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#A5262A

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#D34549

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#E18386

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#F0C1C2

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White

#FFFFFF

#66181B color shades

Shades look darker, richer, and more solid.
#66181B

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#521315

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#3D0E10

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#29090A

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#140405

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Black

#000000

#66181B color tones

Tones looks more sophisticated and complex than base colors.
#66181B

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#722629

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#7A383A

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#7F4C4E

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#806465

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Grey

#808080

#66181B color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#5A6718

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#675418

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#673518

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#66181B

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#67183A

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#67185A

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#541867

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#66181B 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
#66181B
#66181B

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#186765
#186765

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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
#66181B
#66181B

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#184267
#184267

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#18673D
#18673D

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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
#673D18
#673D18

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#66181B
#66181B

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#671842
#671842

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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
#66181B
#66181B

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#1B6718
#1B6718

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#181B67
#181B67

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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
#66181B
#66181B

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#676518
#676518

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#186765
#186765

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#181B67
#181B67

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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
#66181B
#66181B

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#426718
#426718

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#186765
#186765

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#3D1867
#3D1867

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Nearest named colors to #66181B

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

Vintage Maroon color link
Vintage Maroon

#621D1D

Philippine Brown color link
Philippine Brown

#5D1916

Persian Plum color link
Persian Plum

#701C1C

Pohutukawa color link
Pohutukawa

#651C26

Rata color link
Rata

#5D1F1E

Luxury Burgundy color link
Luxury Burgundy

#641226

Hot N Spicy color link
Hot N Spicy

#6B2320

Madam M color link
Madam M

#610C1D

Pomegranate color link
Pomegranate

#660C21

Red Bean color link
Red Bean

#672422

Livewire color link
Livewire

#6D1C27

Red Planet color link
Red Planet

#5A2019

#66181B color backgrounds & wallpapers

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

#66181B color image #66181B color ORCN HD wallpaper 3840x2160 (Desktop)
#66181B color image #66181B color ORCN HD wallpaper 1170x2532 (Mobile)
#66181B color image #66181B color solid HD wallpaper 3840x2160 (Desktop)
#66181B color image #66181B color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#66181B
  • RGB102, 24, 27
  • CMYK0, 31, 29, 60
  • CSSrgb(102, 24, 27)
  • HSL358°, 62%, 25%
  • HSL Precise357.692°, 61.905%, 24.706%
  • HSV358°, 76%, 40%
  • HSB358°, 76%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.094
  • Normalized B (0.0–1.0)0.106
  • GLSLvec3(0.400, 0.094, 0.106)
  • GLSL with alphavec4(0.400, 0.094, 0.106, 1.000)
  • HLSL / Metalfloat3(0.400, 0.094, 0.106)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB9.4%
  • Percentage of Blue in RGB10.6%
  • Color FamilyRed
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID66181B
  • DECIMAL ID6690843
  • Name LengthThis color has no name
  • Seen by search & AI crawlers6 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.