#66CB37#66CB37

#66CB37 is a light, highly saturated green. Relative luminance 0.458; OKLCH L 75.3% C 0.204 H 137.7°. Best body text is #000000 at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#66CB37
RGB	rgb(102, 203, 55)
HSL	hsl(101, 59%, 51%)
HSV	hsv(101, 73%, 80%)
CMYK	cmyk(49.8%, 0%, 72.9%, 20.4%)
CIE-LAB	lab(73.42, -54.64, 61.01)
CIE-LCH	lch(73.42, 81.91, 131.85°)
OKLab	oklab(75.27% -0.1512 0.1375)
OKLCH	oklch(75.27% 0.204 137.7)
XYZ	xyz(27.5241, 45.8105, 11.0056)
Luminance	0.4581 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CB37 #9C37CB

analogous

#B0CB37 #66CB37 #37CB52

triadic

#66CB37 #3766CB #CB3766

tetradic

#66CB37 #37B0CB #9C37CB #CB5237

square

#66CB37 #37B0CB #9C37CB #CB5237

split-complementary

#66CB37 #5237CB #CB37B0

monochromatic

#356C1C #4D9C29 #66CB37 #8BD868 #B0E498

Accessibility & contrast

On white

2.07

#66CB37 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.16

#66CB37 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CB37

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CB37	#FFFFFF	#000000	##000000
##66CB37	1.00	2.07	10.16	10.16
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.16	21.00	1.00	1.00
##000000	10.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1BA1B

Deuteranopia (green-blind)

#C4B146

Tritanopia (blue-blind)

#5FC4AE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66cb37;
/* rgb */ color: rgb(102, 203, 55);
/* oklch */ color: oklch(75.3% 0.204 137.7);

Tailwind

colors: {
  custom: {
    50: '#9bdc77',
    500: '#66cb37',
    950: '#000000',
  },
}

SCSS

$custom: #66cb37;
$custom-light: #9bdc77;
$custom-dark: #000000;

JSON

{
  "hex": "#66cb37",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 55
  },
  "hsl": {
    "h": 100.946,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.7527,
    "c": 0.20435,
    "h": 137.7
  },
  "luminance": 0.45812
}

Semantic roles & 50–950 ramp

primary

#66CB37

secondary

#BB8ED0

accent

#46E2B0

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CB37

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

Preview Lab → · Contrast checker → · Palette generator →