#66CC37#66CC37

#66CC37 is a light, highly saturated green. Relative luminance 0.463; OKLCH L 75.5% C 0.206 H 137.8°. Best body text is #000000 at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#66CC37
RGB	rgb(102, 204, 55)
HSL	hsl(101, 59%, 51%)
HSV	hsv(101, 73%, 80%)
CMYK	cmyk(50%, 0%, 73%, 20%)
CIE-LAB	lab(73.73, -55.02, 61.32)
CIE-LCH	lch(73.73, 82.39, 131.90°)
OKLab	oklab(75.52% -0.1522 0.1381)
OKLCH	oklch(75.52% 0.206 137.8)
XYZ	xyz(27.7610, 46.2843, 11.0846)
Luminance	0.4629 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC37 #9D37CC

analogous

#B0CC37 #66CC37 #37CC52

triadic

#66CC37 #3766CC #CC3766

tetradic

#66CC37 #37B0CC #9D37CC #CC5237

square

#66CC37 #37B0CC #9D37CC #CC5237

split-complementary

#66CC37 #5237CC #CC37B0

monochromatic

#356D1C #4D9E28 #66CC37 #8BD868 #B1E599

Accessibility & contrast

On white

2.05

#66CC37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.26

#66CC37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC37

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC37	#FFFFFF	#000000	##000000
##66CC37	1.00	2.05	10.26	10.26
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.26	21.00	1.00	1.00
##000000	10.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BA1A

Deuteranopia (green-blind)

#C5B246

Tritanopia (blue-blind)

#5FC5AF

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cc37;
/* rgb */ color: rgb(102, 204, 55);
/* oklch */ color: oklch(75.5% 0.206 137.8);

Tailwind

colors: {
  custom: {
    50: '#9bdc77',
    500: '#66cc37',
    950: '#000000',
  },
}

SCSS

$custom: #66cc37;
$custom-light: #9bdc77;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc37",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 55
  },
  "hsl": {
    "h": 101.074,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.75523,
    "c": 0.20553,
    "h": 137.8
  },
  "luminance": 0.46286
}

Semantic roles & 50–950 ramp

primary

#66CC37

secondary

#BC8ED0

accent

#45E3B1

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CC37

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

Preview Lab → · Contrast checker → · Palette generator →