#66C837#66C837

#66C837 is a light, highly saturated green. Relative luminance 0.444; OKLCH L 74.5% C 0.201 H 137.5°. Best body text is #000000 at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#66C837
RGB	rgb(102, 200, 55)
HSL	hsl(101, 57%, 50%)
HSV	hsv(101, 73%, 78%)
CMYK	cmyk(49%, 0%, 72.5%, 21.6%)
CIE-LAB	lab(72.50, -53.50, 60.09)
CIE-LCH	lch(72.50, 80.45, 131.68°)
OKLab	oklab(74.51% -0.1481 0.1355)
OKLCH	oklch(74.51% 0.201 137.5)
XYZ	xyz(26.8225, 44.4073, 10.7718)
Luminance	0.4441 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C837 #9937C8

analogous

#AEC837 #66C837 #37C851

triadic

#66C837 #3766C8 #C83766

tetradic

#66C837 #37AEC8 #9937C8 #C85137

square

#66C837 #37AEC8 #9937C8 #C85137

split-complementary

#66C837 #5137C8 #C837AE

monochromatic

#35681D #4E982A #66C837 #8BD567 #AFE297

Accessibility & contrast

On white

2.13

#66C837 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.88

#66C837 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C837

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C837	#FFFFFF	#000000	##000000
##66C837	1.00	2.13	9.88	9.88
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.88	21.00	1.00	1.00
##000000	9.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB71C

Deuteranopia (green-blind)

#C2AF45

Tritanopia (blue-blind)

#5FC1AC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66c837;
/* rgb */ color: rgb(102, 200, 55);
/* oklch */ color: oklch(74.5% 0.201 137.5);

Tailwind

colors: {
  custom: {
    50: '#9ad977',
    500: '#66c837',
    950: '#000000',
  },
}

SCSS

$custom: #66c837;
$custom-light: #9ad977;
$custom-dark: #000000;

JSON

{
  "hex": "#66c837",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 55
  },
  "hsl": {
    "h": 100.552,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.74511,
    "c": 0.20076,
    "h": 137.5
  },
  "luminance": 0.44409
}

Semantic roles & 50–950 ramp

primary

#66C837

secondary

#B98DCE

accent

#48E0AF

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66C837

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

Preview Lab → · Contrast checker → · Palette generator →