Information about #66FFCF color

#66FFCF color image

Basic facts about this digital color

In the Register's classification, #66FFCF belongs to the Spring Green Color Family, featuring Full Saturation and Very Light brightness. In numbers: rgb(102, 255, 207) (40% red, 100% green, 81.2% blue), or CMYK 60 / 0 / 19 / 0 for print. New to color codes? See our guide to RGB color codes.

A pure, full-strength fresh green-cyan, #66FFCF appears airy and pastel-like. Designers typically reach for tones like this for clean interfaces where content needs room to breathe. In The Official Register of Color Names it is practically indistinguishable from Light Brilliant Turquoise (#65FFD8). Its next-closest registered neighbors are Light Brilliant Aquamarine (#65FFC5) and Doc.com Green (#70EACA).

Technically, the mix leans on its green channel (rgb(102, 255, 207)), which gives #66FFCF its character. If you plan to put text on a #66FFCF background, choose black — the contrast ratio is 16.8:1 (passing WCAG AAA), while white manages only 1.3:1. No one has named #66FFCF so far. Register a name for it and it becomes a permanent record.

#66FFCF color variations

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

#66FFCF 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 #66FFCF

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#66FFCF
  • RGB102, 255, 207
  • CMYK60, 0, 19, 0
  • CSSrgb(102, 255, 207)
  • HSL161°, 100%, 70%
  • HSL Precise161.176°, 100%, 70%
  • HSV161°, 60%, 100%
  • HSB161°, 60%, 100%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)1.000
  • Normalized B (0.0–1.0)0.812
  • GLSLvec3(0.400, 1.000, 0.812)
  • GLSL with alphavec4(0.400, 1.000, 0.812, 1.000)
  • HLSL / Metalfloat3(0.400, 1.000, 0.812)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB100%
  • Percentage of Blue in RGB81.2%
  • Color FamilySpring Green
  • Saturation FamilyFull Saturation
  • Lightness FamilyVery Light
  • HEX ID66FFCF
  • DECIMAL ID6750159
  • Name LengthThis color has no name
  • Seen by search & AI crawlers28 times
  • Counting from2025-01-01