Information about #663333 color

#663333 color image

Basic facts about this digital color

The digital color #663333 is classified in the Register under the Red Color Family, with Mild Saturation and Neutral brightness. Its exact recipe is rgb(102, 51, 51) — 40% red, 20% green, 20% blue — and for print it converts to CMYK 0 / 20 / 20 / 60. New to color codes? See our guide to RGB color codes.

#663333 presents itself as a moderately toned warm red — one that holds a balanced mid-tone. In practice it works well for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is practically indistinguishable from Buccaneer (#622F30). Its next-closest registered neighbors are Oiled Cedar (#66362D) and Patio Red (#6D3331).

Technically, the mix leans on its red channel (rgb(102, 51, 51)), which gives #663333 its character. If you plan to put text on a #663333 background, choose white — the contrast ratio is 10.1:1 (passing WCAG AAA), while black manages only 2.1:1. On paper it relies strongly on black ink (K:60), so proof dark layouts before a large print run. No one has named #663333 so far. Register a name for it and it becomes a permanent record.

#663333 color variations

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

#663333 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 #663333

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

Buccaneer color link
Buccaneer

#622F30

Oiled Cedar color link
Oiled Cedar

#66362D

Patio Red color link
Patio Red

#6D3331

Abrownrami color link
Abrownrami

#693B31

Cajun color link
Cajun

#662F2B

Komakorau color link
Komakorau

#64352A

Fahrenheit color link
Fahrenheit

#672E2B

Meranti color link
Meranti

#6B342A

Jazz color link
Jazz

#5F2C2F

Kwila color link
Kwila

#6D332A

Red Sienna color link
Red Sienna

#5F312A

Conversions between color systems and etc.

  • HEX#663333
  • RGB102, 51, 51
  • CMYK0, 20, 20, 60
  • CSSrgb(102, 51, 51)
  • HSL0°, 33%, 30%
  • HSL Precise0°, 33.333%, 30%
  • HSV0°, 50%, 40%
  • HSB0°, 50%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.200
  • Normalized B (0.0–1.0)0.200
  • GLSLvec3(0.400, 0.200, 0.200)
  • GLSL with alphavec4(0.400, 0.200, 0.200, 1.000)
  • HLSL / Metalfloat3(0.400, 0.200, 0.200)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB20%
  • Percentage of Blue in RGB20%
  • Color FamilyRed
  • Saturation FamilyMild Saturation
  • Lightness FamilyNeutral
  • HEX ID663333
  • DECIMAL ID6697779
  • Name LengthThis color has no name
  • Seen by search & AI crawlers14 times
  • Counting from2025-01-01