Information about #645B44 color

#645B44 color image

Basic facts about this digital color

In the Register's classification, #645B44 belongs to the Orange Color Family, featuring Low Saturation and Neutral brightness. The mix behind it: rgb(100, 91, 68) — 39.2% red, 35.7% green, 26.7% blue; the print equivalent is CMYK 0 / 4 / 13 / 61. Curious how these numbers work? Read our RGB color codes guide.

#645B44 is a gently muted warm orange that sits comfortably between light and dark. It is a natural fit for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is a hair away from Triple Stonewall (#615A47). Nearby in the Register you will also find Wombat (#675744) and Triple Arrowtown (#615847).

The recipe behind #645B44 is rgb(100, 91, 68), with red as the dominant ingredient. If you plan to put text on a #645B44 background, choose white — the contrast ratio is 6.7:1 (passing WCAG AA), while black manages only 3.1:1. For print, note the heavy black component (K:61) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #645B44 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#645B44 color variations

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

#645B44 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 #645B44

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

Conversions between color systems and etc.

  • HEX#645B44
  • RGB100, 91, 68
  • CMYK0, 4, 13, 61
  • CSSrgb(100, 91, 68)
  • HSL43°, 19%, 33%
  • HSL Precise43.125°, 19.048%, 32.941%
  • HSV43°, 32%, 39%
  • HSB43°, 32%, 39%
  • Normalized R (0.0–1.0)0.392
  • Normalized G (0.0–1.0)0.357
  • Normalized B (0.0–1.0)0.267
  • GLSLvec3(0.392, 0.357, 0.267)
  • GLSL with alphavec4(0.392, 0.357, 0.267, 1.000)
  • HLSL / Metalfloat3(0.392, 0.357, 0.267)
  • Percentage of Red in RGB39.2%
  • Percentage of Green in RGB35.7%
  • Percentage of Blue in RGB26.7%
  • Color FamilyOrange
  • Saturation FamilyLow Saturation
  • Lightness FamilyNeutral
  • HEX ID645B44
  • DECIMAL ID6576964
  • Name LengthThis color has no name
  • Seen by search & AI crawlers20 times
  • Counting from2025-01-01