#66A643#66A643

#66A643 is a light, vivid yellow-green. Relative luminance 0.305; OKLCH L 66.0% C 0.148 H 136.0°. Best body text is #000000 at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#66A643
RGB	rgb(102, 166, 67)
HSL	hsl(99, 42%, 46%)
HSV	hsv(99, 60%, 65%)
CMYK	cmyk(38.6%, 0%, 59.6%, 34.9%)
CIE-LAB	lab(62.08, -38.54, 43.99)
CIE-LCH	lch(62.08, 58.48, 131.23°)
OKLab	oklab(66.01% -0.1066 0.103)
OKLCH	oklch(66.01% 0.148 136)
XYZ	xyz(20.1283, 30.5015, 10.1359)
Luminance	0.3050 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A643 #8343A6

analogous

#97A643 #66A643 #43A651

triadic

#66A643 #4366A6 #A64366

tetradic

#66A643 #4397A6 #8343A6 #A65143

square

#66A643 #4397A6 #8343A6 #A65143

split-complementary

#66A643 #5143A6 #A64397

monochromatic

#304F20 #4B7A31 #66A643 #86C165 #A8D391

Accessibility & contrast

On white

2.96

#66A643 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.10

#66A643 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A643

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A643	#FFFFFF	#000000	##000000
##66A643	1.00	2.96	7.10	7.10
#FFFFFF	2.96	1.00	21.00	21.00
#000000	7.10	21.00	1.00	1.00
##000000	7.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AC9938

Deuteranopia (green-blind)

#A3944A

Tritanopia (blue-blind)

#64A091

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #66a643;
/* rgb */ color: rgb(102, 166, 67);
/* oklch */ color: oklch(66.0% 0.148 136.0);

Tailwind

colors: {
  custom: {
    50: '#96c17b',
    500: '#66a643',
    950: '#000000',
  },
}

SCSS

$custom: #66a643;
$custom-light: #96c17b;
$custom-dark: #000000;

JSON

{
  "hex": "#66a643",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 67
  },
  "hsl": {
    "h": 98.788,
    "s": 42.489,
    "l": 45.686
  },
  "oklch": {
    "l": 0.66007,
    "c": 0.14825,
    "h": 136
  },
  "luminance": 0.30502
}

Semantic roles & 50–950 ramp

primary

#66A643

secondary

#AA87BE

accent

#56D2A6

background

#F9FBF7

surface

#F2F7EE

border

#CCD0C9

text

#0E1209

muted

#7E817B

Preview Lab

Preview with #66A643

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

Preview Lab → · Contrast checker → · Palette generator →