Information about #663729 color

#663729 color image

Basic facts about this digital color

The digital color #663729 is classified in the Register under the Red Color Family, with Moderate Saturation and Neutral brightness. Its exact recipe is rgb(102, 55, 41) — 40% red, 21.6% green, 16.1% blue — and for print it converts to CMYK 0 / 18 / 24 / 60. Curious how these numbers work? Read our RGB color codes guide.

#663729 presents itself as a clearly saturated earthy red — one that holds a balanced mid-tone. It is a natural fit for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is practically indistinguishable from Komakorau (#64352A). Its next-closest registered neighbors are Hairy Heath (#633528) and Oiled Cedar (#66362D).

In RGB terms — rgb(102, 55, 41) — the red channel does the heavy lifting here. If you plan to put text on a #663729 background, choose white — the contrast ratio is 9.8:1 (passing WCAG AAA), while black manages only 2.1:1. For print, note the heavy black component (K:60) — ink coverage matters with tones this deep. No one has named #663729 so far. Register a name for it and it becomes a permanent record.

#663729 color variations

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

#663729 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 #663729

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

Komakorau color link
Komakorau

#64352A

Hairy Heath color link
Hairy Heath

#633528

Oiled Cedar color link
Oiled Cedar

#66362D

Meranti color link
Meranti

#6B342A

Fudge color link
Fudge

#6A3E2A

Kwila color link
Kwila

#6D332A

Cajun color link
Cajun

#662F2B

Red Sienna color link
Red Sienna

#5F312A

Fahrenheit color link
Fahrenheit

#672E2B

Pueblo color link
Pueblo

#6E3326

Abrownrami color link
Abrownrami

#693B31

New Amber color link
New Amber

#6D3B24

Conversions between color systems and etc.

  • HEX#663729
  • RGB102, 55, 41
  • CMYK0, 18, 24, 60
  • CSSrgb(102, 55, 41)
  • HSL14°, 43%, 28%
  • HSL Precise13.77°, 42.657%, 28.039%
  • HSV14°, 60%, 40%
  • HSB14°, 60%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.216
  • Normalized B (0.0–1.0)0.161
  • GLSLvec3(0.400, 0.216, 0.161)
  • GLSL with alphavec4(0.400, 0.216, 0.161, 1.000)
  • HLSL / Metalfloat3(0.400, 0.216, 0.161)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB21.6%
  • Percentage of Blue in RGB16.1%
  • Color FamilyRed
  • Saturation FamilyModerate Saturation
  • Lightness FamilyNeutral
  • HEX ID663729
  • DECIMAL ID6698793
  • Name LengthThis color has no name
  • Seen by search & AI crawlers304 times
  • Counting from2025-01-01