#66C537#66C537

#66C537 is a light, vivid green. Relative luminance 0.430; OKLCH L 73.8% C 0.197 H 137.4°. Best body text is #000000 at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#66C537
RGB	rgb(102, 197, 55)
HSL	hsl(100, 56%, 49%)
HSV	hsv(100, 72%, 77%)
CMYK	cmyk(48.2%, 0%, 72.1%, 22.7%)
CIE-LAB	lab(71.58, -52.35, 59.16)
CIE-LCH	lch(71.58, 78.99, 131.51°)
OKLab	oklab(73.75% -0.145 0.1336)
OKLCH	oklch(73.75% 0.197 137.4)
XYZ	xyz(26.1345, 43.0313, 10.5424)
Luminance	0.4303 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C537 #9637C5

analogous

#ADC537 #66C537 #37C54F

triadic

#66C537 #3766C5 #C53766

tetradic

#66C537 #37ADC5 #9637C5 #C54F37

square

#66C537 #37ADC5 #9637C5 #C54F37

split-complementary

#66C537 #4F37C5 #C537AD

monochromatic

#34651C #4D952A #66C537 #8AD465 #AEE195

Accessibility & contrast

On white

2.19

#66C537 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.61

#66C537 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C537

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C537	#FFFFFF	#000000	##000000
##66C537	1.00	2.19	9.61	9.61
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.61	21.00	1.00	1.00
##000000	9.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBB41E

Deuteranopia (green-blind)

#BFAC45

Tritanopia (blue-blind)

#60BEA9

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66c537;
/* rgb */ color: rgb(102, 197, 55);
/* oklch */ color: oklch(73.8% 0.197 137.4);

Tailwind

colors: {
  custom: {
    50: '#9ad777',
    500: '#66c537',
    950: '#000000',
  },
}

SCSS

$custom: #66c537;
$custom-light: #9ad777;
$custom-dark: #000000;

JSON

{
  "hex": "#66c537",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 55
  },
  "hsl": {
    "h": 100.141,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.73751,
    "c": 0.19715,
    "h": 137.4
  },
  "luminance": 0.43033
}

Semantic roles & 50–950 ramp

primary

#66C537

secondary

#B78BCD

accent

#48E0AE

background

#FAFDF7

surface

#F3FAEE

border

#CDD3C9

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C537

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

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