#66C137#66C137

#66C137 is a light, vivid yellow-green. Relative luminance 0.412; OKLCH L 72.7% C 0.192 H 137.1°. Best body text is #000000 at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#66C137
RGB	rgb(102, 193, 55)
HSL	hsl(100, 56%, 49%)
HSV	hsv(100, 72%, 76%)
CMYK	cmyk(47.2%, 0%, 71.5%, 24.3%)
CIE-LAB	lab(70.34, -50.79, 57.90)
CIE-LCH	lch(70.34, 77.03, 131.26°)
OKLab	oklab(72.74% -0.1408 0.131)
OKLCH	oklch(72.74% 0.192 137.1)
XYZ	xyz(25.2383, 41.2389, 10.2437)
Luminance	0.4124 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C137 #9237C1

analogous

#ABC137 #66C137 #37C14D

triadic

#66C137 #3766C1 #C13766

tetradic

#66C137 #37ABC1 #9237C1 #C14D37

square

#66C137 #37ABC1 #9237C1 #C14D37

split-complementary

#66C137 #4D37C1 #C137AB

monochromatic

#34621C #4D9129 #66C137 #89D263 #ADE092

Accessibility & contrast

On white

2.27

#66C137 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.25

#66C137 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C137

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C137	#FFFFFF	#000000	##000000
##66C137	1.00	2.27	9.25	9.25
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.25	21.00	1.00	1.00
##000000	9.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7B11F

Deuteranopia (green-blind)

#BBA944

Tritanopia (blue-blind)

#61BAA6

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #66c137;
/* rgb */ color: rgb(102, 193, 55);
/* oklch */ color: oklch(72.7% 0.192 137.1);

Tailwind

colors: {
  custom: {
    50: '#99d476',
    500: '#66c137',
    950: '#000000',
  },
}

SCSS

$custom: #66c137;
$custom-light: #99d476;
$custom-dark: #000000;

JSON

{
  "hex": "#66c137",
  "rgb": {
    "r": 102,
    "g": 193,
    "b": 55
  },
  "hsl": {
    "h": 99.565,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.72738,
    "c": 0.1923,
    "h": 137.1
  },
  "luminance": 0.41241
}

Semantic roles & 50–950 ramp

primary

#66C137

secondary

#B489CB

accent

#49DFAC

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C137

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

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