Information about #666F8E color

#666F8E color image

Basic facts about this digital color

In the Register's classification, #666F8E belongs to the Blue Color Family, featuring Low Saturation and Light brightness. In numbers: rgb(102, 111, 142) (40% red, 43.5% green, 55.7% blue), or CMYK 16 / 12 / 0 / 44 for print. New to color codes? See our guide to RGB color codes.

A softly toned deep-sea blue, #666F8E 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 practically indistinguishable from Sunset-stone-equanimity-natalie (#656A88). Its next-closest registered neighbors are Elevate (#60768B) and Waikawa Grey (#5B6E91).

In RGB terms — rgb(102, 111, 142) — the blue channel does the heavy lifting here. Accessibility-wise, white text works best on #666F8E: 5.0:1 contrast (passing WCAG AA) versus 4.2:1 for black. #666F8E has no official name yet. If this shade means something to you, you can be the one to name it.

#666F8E color variations

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

#666F8E 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 #666F8E

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#666F8E
  • RGB102, 111, 142
  • CMYK16, 12, 0, 44
  • CSSrgb(102, 111, 142)
  • HSL227°, 16%, 48%
  • HSL Precise226.5°, 16.393%, 47.843%
  • HSV227°, 28%, 56%
  • HSB227°, 28%, 56%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.435
  • Normalized B (0.0–1.0)0.557
  • GLSLvec3(0.400, 0.435, 0.557)
  • GLSL with alphavec4(0.400, 0.435, 0.557, 1.000)
  • HLSL / Metalfloat3(0.400, 0.435, 0.557)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB43.5%
  • Percentage of Blue in RGB55.7%
  • Color FamilyBlue
  • Saturation FamilyLow Saturation
  • Lightness FamilyLight
  • HEX ID666F8E
  • DECIMAL ID6713230
  • Name LengthThis color has no name
  • Seen by search & AI crawlers12 times
  • Counting from2025-01-01