Information about #66646D color

#66646D color image

Basic facts about this digital color

In the Register's classification, #66646D belongs to the Blue Color Family, featuring Desaturated and Light brightness. The mix behind it: rgb(102, 100, 109) — 40% red, 39.2% green, 42.7% blue; the print equivalent is CMYK 3 / 4 / 0 / 57. New to color codes? See our guide to RGB color codes.

The color #66646D reads as a quiet, subdued balanced grey tone and feels open and friendly. Designers typically reach for tones like this for versatile mid-ground roles, from cards to secondary buttons. In The Official Register of Color Names it is almost identical to Shuttle Grey (#61666B). Its next-closest registered neighbors are Mid Grey (#666A6D) and Salt Box (#696268).

In RGB terms — rgb(102, 100, 109) — the blue channel does the heavy lifting here. Accessibility-wise, white text works best on #66646D: 5.8:1 contrast (passing WCAG AA) versus 3.6:1 for black. Out of 16,777,216 possible colors, #66646D is still unnamed — it can be claimed and named in The Official Register of Color Names.

#66646D color variations

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

#66646D 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 #66646D

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

Shuttle Grey color link
Shuttle Grey

#61666B

Mid Grey color link
Mid Grey

#666A6D

Salt Box color link
Salt Box

#696268

Comet color link
Comet

#636373

Quarter Tuna color link
Quarter Tuna

#656A70

Granite Gray color link
Granite Gray

#676767

Dim Gray color link
Dim Gray

#696969

Scarpa Flow color link
Scarpa Flow

#6B6A6C

Scorpion color link
Scorpion

#6A6466

Dolphin color link
Dolphin

#6A6873

Chicane color link
Chicane

#686765

Conversions between color systems and etc.

  • HEX#66646D
  • RGB102, 100, 109
  • CMYK3, 4, 0, 57
  • CSSrgb(102, 100, 109)
  • HSL253°, 4%, 41%
  • HSL Precise253.333°, 4.306%, 40.98%
  • HSV253°, 8%, 43%
  • HSB253°, 8%, 43%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.392
  • Normalized B (0.0–1.0)0.427
  • GLSLvec3(0.400, 0.392, 0.427)
  • GLSL with alphavec4(0.400, 0.392, 0.427, 1.000)
  • HLSL / Metalfloat3(0.400, 0.392, 0.427)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB39.2%
  • Percentage of Blue in RGB42.7%
  • Color FamilyBlue
  • Saturation FamilyDesaturated
  • Lightness FamilyLight
  • HEX ID66646D
  • DECIMAL ID6710381
  • Name LengthThis color has no name
  • Seen by search & AI crawlers16 times
  • Counting from2025-01-01