Information about #66381B color

#66381B color image

Basic facts about this digital color

In the Register's classification, #66381B belongs to the Orange Color Family, featuring Moderate Saturation and Neutral brightness. In numbers: rgb(102, 56, 27) (40% red, 22% green, 10.6% blue), or CMYK 0 / 18 / 29 / 60 for print. Curious how these numbers work? Read our RGB color codes guide.

A clearly saturated warm orange, #66381B holds a balanced mid-tone. Expect to see shades like this in versatile mid-ground roles, from cards to secondary buttons. In The Official Register of Color Names it is practically indistinguishable from Royal Mahogany (#653420). Its next-closest registered neighbors are Earthtone (#5D3A1A) and New Amber (#6D3B24).

The recipe behind #66381B is rgb(102, 56, 27), with red as the dominant ingredient. Accessibility-wise, white text works best on #66381B: 9.8:1 contrast (passing WCAG AAA) versus 2.1:1 for black. On paper it relies strongly on black ink (K:60), so proof dark layouts before a large print run. #66381B has no official name yet. If this shade means something to you, you can be the one to name it.

#66381B color variations

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

#66381B 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

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

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

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

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme

Nearest named colors to #66381B

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

Earthtone color link
Earthtone

#5D3A1A

New Amber color link
New Amber

#6D3B24

Dark Brown color link
Dark Brown

#654321

Hairy Heath color link
Hairy Heath

#633528

Deep Ochre color link
Deep Ochre

#733D1A

Carnaby Tan color link
Carnaby Tan

#5B3A24

Pueblo color link
Pueblo

#6E3326

Peru Tan color link
Peru Tan

#733D1F

Kobicha color link
Kobicha

#6B4423

Komakorau color link
Komakorau

#64352A

Conversions between color systems and etc.

  • HEX#66381B
  • RGB102, 56, 27
  • CMYK0, 18, 29, 60
  • CSSrgb(102, 56, 27)
  • HSL23°, 58%, 25%
  • HSL Precise23.2°, 58.14%, 25.294%
  • HSV23°, 74%, 40%
  • HSB23°, 74%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.220
  • Normalized B (0.0–1.0)0.106
  • GLSLvec3(0.400, 0.220, 0.106)
  • GLSL with alphavec4(0.400, 0.220, 0.106, 1.000)
  • HLSL / Metalfloat3(0.400, 0.220, 0.106)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB22%
  • Percentage of Blue in RGB10.6%
  • Color FamilyOrange
  • Saturation FamilyModerate Saturation
  • Lightness FamilyNeutral
  • HEX ID66381B
  • DECIMAL ID6699035
  • Name LengthThis color has no name
  • Seen by search & AI crawlers11 times
  • Counting from2025-01-01