Information about #663D40 color

#663D40 color image

Basic facts about this digital color

#663D40 falls into the Red Color Family — Mild Saturation, Neutral brightness. Its exact recipe is rgb(102, 61, 64) — 40% red, 23.9% green, 25.1% blue — and for print it converts to CMYK 0 / 16 / 15 / 60. Curious how these numbers work? Read our RGB color codes guide.

#663D40 is a mildly saturated red that occupies the middle of the lightness scale. It is a natural fit for balanced palettes where no single element should shout. In The Official Register of Color Names it is practically indistinguishable from Solar Flare (#693E40). Slightly further away sit Purple Brown (#673A3F) and Brunette (#634041).

In RGB terms — rgb(102, 61, 64) — the red channel does the heavy lifting here. On this background, white text reaches a 9.1:1 contrast ratio (passing WCAG AAA); black stays at 2.3:1. On paper it relies strongly on black ink (K:60), so proof dark layouts before a large print run. #663D40 has no official name yet. If this shade means something to you, you can be the one to name it.

#663D40 color variations

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

#663D40 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 #663D40

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

Solar Flare color link
Solar Flare

#693E40

Purple Brown color link
Purple Brown

#673A3F

Brunette color link
Brunette

#634041

Tawny Port color link
Tawny Port

#643A48

Lexington color link
Lexington

#683E37

Matchmaker color link
Matchmaker

#6D3540

Deep Coffee color link
Deep Coffee

#704241

Catawba color link
Catawba

#703642

Grape Mouse color link
Grape Mouse

#63424B

Rose Ebony color link
Rose Ebony

#674846

#663D40 color backgrounds & wallpapers

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

Conversions between color systems and etc.

  • HEX#663D40
  • RGB102, 61, 64
  • CMYK0, 16, 15, 60
  • CSSrgb(102, 61, 64)
  • HSL356°, 25%, 32%
  • HSL Precise355.61°, 25.153%, 31.961%
  • HSV356°, 40%, 40%
  • HSB356°, 40%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.239
  • Normalized B (0.0–1.0)0.251
  • GLSLvec3(0.400, 0.239, 0.251)
  • GLSL with alphavec4(0.400, 0.239, 0.251, 1.000)
  • HLSL / Metalfloat3(0.400, 0.239, 0.251)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB23.9%
  • Percentage of Blue in RGB25.1%
  • Color Family (Hue)Red
  • Saturation FamilyMild Saturation
  • Lightness FamilyNeutral
  • HEX ID663D40
  • DECIMAL ID6700352
  • Name LengthThis color has no name
  • This page visited6 times
  • Counting from2025-01-01