Information about #664B0A color

#664B0A color image

Basic facts about this digital color

The digital color #664B0A is classified in the Register under the Orange Color Family, with High Saturation and Dark brightness. Its exact recipe is rgb(102, 75, 10) — 40% red, 29.4% green, 3.9% blue — and for print it converts to CMYK 0 / 11 / 36 / 60. New to color codes? See our guide to RGB color codes.

#664B0A presents itself as a vivid, lively orange — one that carries a shadowy depth. In practice it works well for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Mud Brown (#60460F). Nearby in the Register you will also find Violin Brown (#674403) and Olive Brown (#645403).

Technically, the mix leans on its red channel (rgb(102, 75, 10)), which gives #664B0A its character. If you plan to put text on a #664B0A background, choose white — the contrast ratio is 8.2:1 (passing WCAG AAA), while black manages only 2.6:1. On paper it relies strongly on black ink (K:60), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #664B0A is still unnamed — it can be claimed and named in The Official Register of Color Names.

#664B0A color variations

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

#664B0A 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 #664B0A

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

Mud Brown color link
Mud Brown

#60460F

Violin Brown color link
Violin Brown

#674403

Olive Brown color link
Olive Brown

#645403

Deep Gold color link
Deep Gold

#594E00

Sepia color link
Sepia

#704214

Deep Amber color link
Deep Amber

#594300

Green Brown color link
Green Brown

#544E03

Deep Olive color link
Deep Olive

#595900

Greeny Brown color link
Greeny Brown

#696006

Pineapple color link
Pineapple

#563C0D

Conversions between color systems and etc.

  • HEX#664B0A
  • RGB102, 75, 10
  • CMYK0, 11, 36, 60
  • CSSrgb(102, 75, 10)
  • HSL42°, 82%, 22%
  • HSL Precise42.391°, 82.143%, 21.961%
  • HSV42°, 90%, 40%
  • HSB42°, 90%, 40%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.294
  • Normalized B (0.0–1.0)0.039
  • GLSLvec3(0.400, 0.294, 0.039)
  • GLSL with alphavec4(0.400, 0.294, 0.039, 1.000)
  • HLSL / Metalfloat3(0.400, 0.294, 0.039)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB29.4%
  • Percentage of Blue in RGB3.9%
  • Color FamilyOrange
  • Saturation FamilyHigh Saturation
  • Lightness FamilyDark
  • HEX ID664B0A
  • DECIMAL ID6703882
  • Name LengthThis color has no name
  • Seen by search & AI crawlers10 times
  • Counting from2025-01-01