Information about #66D8E5 color

#66D8E5 color image

Basic facts about this digital color

In the Register's classification, #66D8E5 belongs to the Cyan Color Family, featuring High Saturation and Very Light brightness. In numbers: rgb(102, 216, 229) (40% red, 84.7% green, 89.8% blue), or CMYK 50 / 5 / 0 / 10 for print. Curious how these numbers work? Read our RGB color codes guide.

#66D8E5 presents itself as a vivid, lively cyan — one that has a delicate, washed-out lightness. It is a natural fit for minimalist layouts, soft backgrounds and pastel palettes. In The Official Register of Color Names it is just a few steps away from Aquamarine Blue (#71D9E2). Slightly further away sit Pastel Ocean (#6ECDDB) and Kathy & Michael at 20 Years and Beyond (#64D8D0).

Technically, the mix leans on its blue channel (rgb(102, 216, 229)), which gives #66D8E5 its character. Accessibility-wise, black text works best on #66D8E5: 12.5:1 contrast (passing WCAG AAA) versus 1.7:1 for white. No one has named #66D8E5 so far. Register a name for it and it becomes a permanent record.

#66D8E5 color variations

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

#66D8E5 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 #66D8E5

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#66D8E5
  • RGB102, 216, 229
  • CMYK50, 5, 0, 10
  • CSSrgb(102, 216, 229)
  • HSL186°, 71%, 65%
  • HSL Precise186.142°, 70.95%, 64.902%
  • HSV186°, 55%, 90%
  • HSB186°, 55%, 90%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.847
  • Normalized B (0.0–1.0)0.898
  • GLSLvec3(0.400, 0.847, 0.898)
  • GLSL with alphavec4(0.400, 0.847, 0.898, 1.000)
  • HLSL / Metalfloat3(0.400, 0.847, 0.898)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB84.7%
  • Percentage of Blue in RGB89.8%
  • Color FamilyCyan
  • Saturation FamilyHigh Saturation
  • Lightness FamilyVery Light
  • HEX ID66D8E5
  • DECIMAL ID6740197
  • Name LengthThis color has no name
  • Seen by search & AI crawlers15 times
  • Counting from2025-01-01