#66A640#66A640

#66A640 is a light, vivid yellow-green. Relative luminance 0.305; OKLCH L 66.0% C 0.151 H 135.6°. Best body text is #000000 at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#66A640
RGB	rgb(102, 166, 64)
HSL	hsl(98, 44%, 45%)
HSV	hsv(98, 61%, 65%)
CMYK	cmyk(38.6%, 0%, 61.4%, 34.9%)
CIE-LAB	lab(62.05, -38.85, 45.33)
CIE-LCH	lch(62.05, 59.70, 130.59°)
OKLab	oklab(65.97% -0.1077 0.1056)
OKLCH	oklch(65.97% 0.151 135.6)
XYZ	xyz(20.0406, 30.4664, 9.6741)
Luminance	0.3047 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A640 #8040A6

analogous

#99A640 #66A640 #40A64D

triadic

#66A640 #4066A6 #A64066

tetradic

#66A640 #4099A6 #8040A6 #A64D40

square

#66A640 #4099A6 #8040A6 #A64D40

split-complementary

#66A640 #4D40A6 #A64099

monochromatic

#304E1E #4B7A2F #66A640 #85C261 #A7D38D

Accessibility & contrast

On white

2.96

#66A640 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.09

#66A640 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A640

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A640	#FFFFFF	#000000	##000000
##66A640	1.00	2.96	7.09	7.09
#FFFFFF	2.96	1.00	21.00	21.00
#000000	7.09	21.00	1.00	1.00
##000000	7.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AC9935

Deuteranopia (green-blind)

#A39448

Tritanopia (blue-blind)

#64A090

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #66a640;
/* rgb */ color: rgb(102, 166, 64);
/* oklch */ color: oklch(66.0% 0.151 135.6);

Tailwind

colors: {
  custom: {
    50: '#96c179',
    500: '#66a640',
    950: '#000000',
  },
}

SCSS

$custom: #66a640;
$custom-light: #96c179;
$custom-dark: #000000;

JSON

{
  "hex": "#66a640",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 64
  },
  "hsl": {
    "h": 97.647,
    "s": 44.348,
    "l": 45.098
  },
  "oklch": {
    "l": 0.65973,
    "c": 0.1508,
    "h": 135.6
  },
  "luminance": 0.30467
}

Semantic roles & 50–950 ramp

primary

#66A640

secondary

#A884BE

accent

#54D4A4

background

#F9FBF7

surface

#F2F7EE

border

#CCD0C9

text

#0E1209

muted

#7E817B

Preview Lab

Preview with #66A640

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →