Information about #666BA4 color

#666BA4 color image

Basic facts about this digital color

The digital color #666BA4 is classified in the Register under the Blue Color Family, with Mild Saturation and Light brightness. Its exact recipe is rgb(102, 107, 164) — 40% red, 42% green, 64.3% blue — and for print it converts to CMYK 24 / 22 / 0 / 36. Curious how these numbers work? Read our RGB color codes guide.

#666BA4 presents itself as a moderately toned deep-sea blue — one that feels open and friendly. It is a natural fit for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is practically indistinguishable from Deloras (#606AA1). Its next-closest registered neighbors are Dark Blue Gray (#666699) and Scampi (#6F63A0).

The recipe behind #666BA4 is rgb(102, 107, 164), with blue as the dominant ingredient. If you plan to put text on a #666BA4 background, choose white — the contrast ratio is 5.0:1 (passing WCAG AA), while black manages only 4.2:1. No one has named #666BA4 so far. Register a name for it and it becomes a permanent record.

#666BA4 color variations

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

#666BA4 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 #666BA4

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

Deloras color link
Deloras

#606AA1

Scampi color link
Scampi

#6F63A0

Deluge color link
Deluge

#7563A8

Panorama color link
Panorama

#597499

Waikawa Grey color link
Waikawa Grey

#5B6E91

Blue Yonder color link
Blue Yonder

#5072A7

Stained Red color link
Stained Red

#78779B

Conversions between color systems and etc.

  • HEX#666BA4
  • RGB102, 107, 164
  • CMYK24, 22, 0, 36
  • CSSrgb(102, 107, 164)
  • HSL235°, 25%, 52%
  • HSL Precise235.161°, 25.41%, 52.157%
  • HSV235°, 38%, 64%
  • HSB235°, 38%, 64%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.420
  • Normalized B (0.0–1.0)0.643
  • GLSLvec3(0.400, 0.420, 0.643)
  • GLSL with alphavec4(0.400, 0.420, 0.643, 1.000)
  • HLSL / Metalfloat3(0.400, 0.420, 0.643)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB42%
  • Percentage of Blue in RGB64.3%
  • Color FamilyBlue
  • Saturation FamilyMild Saturation
  • Lightness FamilyLight
  • HEX ID666BA4
  • DECIMAL ID6712228
  • Name LengthThis color has no name
  • Seen by search & AI crawlers13 times
  • Counting from2025-01-01