#66D137#66D137

#66D137 is a light, highly saturated green. Relative luminance 0.487; OKLCH L 76.8% C 0.211 H 138.1°. Best body text is #000000 at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#66D137
RGB	rgb(102, 209, 55)
HSL	hsl(102, 63%, 52%)
HSV	hsv(102, 74%, 82%)
CMYK	cmyk(51.2%, 0%, 73.7%, 18%)
CIE-LAB	lab(75.26, -56.89, 62.85)
CIE-LCH	lch(75.26, 84.78, 132.15°)
OKLab	oklab(76.79% -0.1573 0.1413)
OKLCH	oklch(76.79% 0.211 138.1)
XYZ	xyz(28.9685, 48.6994, 11.4871)
Luminance	0.4870 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D137 #A237D1

analogous

#B3D137 #66D137 #37D155

triadic

#66D137 #3766D1 #D13766

tetradic

#66D137 #37B3D1 #A237D1 #D15537

square

#66D137 #37B3D1 #A237D1 #D15537

split-complementary

#66D137 #5537D1 #D137B3

monochromatic

#36731A #4DA526 #66D137 #8CDC69 #B2E89B

Accessibility & contrast

On white

1.96

#66D137 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.74

#66D137 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D137

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D137	#FFFFFF	#000000	##000000
##66D137	1.00	1.96	10.74	10.74
#FFFFFF	1.96	1.00	21.00	21.00
#000000	10.74	21.00	1.00	1.00
##000000	10.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8BF18

Deuteranopia (green-blind)

#CAB647

Tritanopia (blue-blind)

#5ECAB3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66d137;
/* rgb */ color: rgb(102, 209, 55);
/* oklch */ color: oklch(76.8% 0.211 138.1);

Tailwind

colors: {
  custom: {
    50: '#9be078',
    500: '#66d137',
    950: '#000000',
  },
}

SCSS

$custom: #66d137;
$custom-light: #9be078;
$custom-dark: #000000;

JSON

{
  "hex": "#66d137",
  "rgb": {
    "r": 102,
    "g": 209,
    "b": 55
  },
  "hsl": {
    "h": 101.688,
    "s": 62.602,
    "l": 51.765
  },
  "oklch": {
    "l": 0.76785,
    "c": 0.21142,
    "h": 138.1
  },
  "luminance": 0.48702
}

Semantic roles & 50–950 ramp

primary

#66D137

secondary

#BF90D4

accent

#42E6B4

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D137

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

Preview Lab → · Contrast checker → · Palette generator →