Information about #66A521 color

#66A521 color image

Basic facts about this digital color

The digital color #66A521 is classified in the Register under the Chartreuse Color Family, with High Saturation and Neutral brightness. Its exact recipe is rgb(102, 165, 33) — 40% red, 64.7% green, 12.9% blue — and for print it converts to CMYK 25 / 0 / 52 / 35. Curious how these numbers work? Read our RGB color codes guide.

A energetic, saturated zesty chartreuse, #66A521 sits comfortably between light and dark. Expect to see shades like this in bold branding moments and attention-grabbing details. In The Official Register of Color Names it is a hair away from Green Onion (#6AA121). Nearby in the Register you will also find Christi (#71A91D) and Limeade (#5F9727).

The recipe behind #66A521 is rgb(102, 165, 33), with green as the dominant ingredient. If you plan to put text on a #66A521 background, choose black — the contrast ratio is 7.0:1 (passing WCAG AA), while white manages only 3.0:1. #66A521 has no official name yet. If this shade means something to you, you can be the one to name it.

#66A521 color variations

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

#66A521 color tints

Tints look brighter, pastel, and less intense.
#66A521

Color has no name
#85D52F

Color has no name
#A3E063

Color has no name
#C2EA97

Color has no name
#E0F4CB

Color has no name
White

#FFFFFF

#66A521 color shades

Shades look darker, richer, and more solid.
#66A521

Color has no name
#51841A

Color has no name
#3D6313

Color has no name
#28420D

Color has no name
#142106

Color has no name
Black

#000000

#66A521 color tones

Tones looks more sophisticated and complex than base colors.
#66A521

Color has no name
#6AA130

Color has no name
#709B42

Color has no name
#759355

Color has no name
#7A8A69

Color has no name
Grey

#808080

#66A521 color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#20A67B

Color has no name
#20A646

Color has no name
#30A620

Color has no name
#66A521

Color has no name
#9AA620

Color has no name
#A67B20

Color has no name
#A64620

Color has no name

#66A521 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
#66A521
#66A521

Color has no name

#6121A6
#6121A6

Color has no name

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
#66A521
#66A521

Color has no name

#A421A6
#A421A6

Color has no name

#2123A6
#2123A6

Color has no name

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
#23A621
#23A621

Color has no name

#66A521
#66A521

Color has no name

#A6A421
#A6A421

Color has no name

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
#66A521
#66A521

Color has no name

#2166A6
#2166A6

Color has no name

#A62166
#A62166

Color has no name

Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme
#66A521
#66A521

Color has no name

#21A661
#21A661

Color has no name

#6121A6
#6121A6

Color has no name

#A62166
#A62166

Color has no name

Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme
#66A521
#66A521

Color has no name

#21A6A4
#21A6A4

Color has no name

#6121A6
#6121A6

Color has no name

#A62123
#A62123

Color has no name

Nearest named colors to #66A521

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

Green Onion color link
Green Onion

#6AA121

Christi color link
Christi

#71A91D

Limeade color link
Limeade

#5F9727

Cinnabar Green color link
Cinnabar Green

#61B329

Grass color link
Grass

#5CAC2D

Kakapo color link
Kakapo

#5C9625

Lima color link
Lima

#7AAC21

Vida Loca color link
Vida Loca

#5F9228

Leaf color link
Leaf

#71AA34

Olive Drab color link
Olive Drab

#6B8E23

Olivedrab color link
Olivedrab

#698B22

Sushi color link
Sushi

#7C9F2F

#66A521 color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

#66A521 color image #66A521 color ORCN HD wallpaper 3840x2160 (Desktop)
#66A521 color image #66A521 color ORCN HD wallpaper 1170x2532 (Mobile)
#66A521 color image #66A521 color solid HD wallpaper 3840x2160 (Desktop)
#66A521 color image #66A521 color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#66A521
  • RGB102, 165, 33
  • CMYK25, 0, 52, 35
  • CSSrgb(102, 165, 33)
  • HSL89°, 67%, 39%
  • HSL Precise88.636°, 66.667%, 38.824%
  • HSV89°, 80%, 65%
  • HSB89°, 80%, 65%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.647
  • Normalized B (0.0–1.0)0.129
  • GLSLvec3(0.400, 0.647, 0.129)
  • GLSL with alphavec4(0.400, 0.647, 0.129, 1.000)
  • HLSL / Metalfloat3(0.400, 0.647, 0.129)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB64.7%
  • Percentage of Blue in RGB12.9%
  • Color FamilyChartreuse
  • Saturation FamilyHigh Saturation
  • Lightness FamilyNeutral
  • HEX ID66A521
  • DECIMAL ID6726945
  • Name LengthThis color has no name
  • Seen by search & AI crawlers7 times
  • Counting from2025-01-01

Copyright © 2021-2026 The Official Register of Color Names. All Rights Reserved.