Information about #66A379 color

#66A379 color image

Basic facts about this digital color

The digital color #66A379 is classified in the Register under the Spring Green Color Family, with Low Saturation and Light brightness. Its exact recipe is rgb(102, 163, 121) — 40% red, 63.9% green, 47.5% blue — and for print it converts to CMYK 24 / 0 / 16 / 36. New to color codes? See our guide to RGB color codes.

#66A379 presents itself as a gently muted spring green — one that sits on the lighter side of the spectrum. In practice it works well for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is practically indistinguishable from Shiny Shamrock (#5FA778). Nearby in the Register you will also find Tea (#65AB7C) and Oxley (#6D9A79).

Technically, the mix leans on its green channel (rgb(102, 163, 121)), which gives #66A379 its character. If you plan to put text on a #66A379 background, choose black — the contrast ratio is 7.1:1 (passing WCAG AAA), while white manages only 3.0:1. Out of 16,777,216 possible colors, #66A379 is still unnamed — it can be claimed and named in The Official Register of Color Names.

#66A379 color variations

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

#66A379 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 #66A379

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

Tea color link
Tea

#65AB7C

Oxley color link
Oxley

#6D9A79

Dusty Green color link
Dusty Green

#76A973

Grey Teal color link
Grey Teal

#5E9B8A

Grey Green color link
Grey Green

#789B73

Dull Teal color link
Dull Teal

#5F9E8F

Greeny Grey color link
Greeny Grey

#7EA07A

Laurel color link
Laurel

#6E8D71

Conversions between color systems and etc.

  • HEX#66A379
  • RGB102, 163, 121
  • CMYK24, 0, 16, 36
  • CSSrgb(102, 163, 121)
  • HSL139°, 25%, 52%
  • HSL Precise138.689°, 24.898%, 51.961%
  • HSV139°, 37%, 64%
  • HSB139°, 37%, 64%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.639
  • Normalized B (0.0–1.0)0.475
  • GLSLvec3(0.400, 0.639, 0.475)
  • GLSL with alphavec4(0.400, 0.639, 0.475, 1.000)
  • HLSL / Metalfloat3(0.400, 0.639, 0.475)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB63.9%
  • Percentage of Blue in RGB47.5%
  • Color FamilySpring Green
  • Saturation FamilyLow Saturation
  • Lightness FamilyLight
  • HEX ID66A379
  • DECIMAL ID6726521
  • Name LengthThis color has no name
  • Seen by search & AI crawlers19 times
  • Counting from2025-01-01