#66BE36#66BE36

#66BE36 is a light, vivid yellow-green. Relative luminance 0.399; OKLCH L 72.0% C 0.189 H 136.8°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#66BE36
RGB	rgb(102, 190, 54)
HSL	hsl(99, 56%, 48%)
HSV	hsv(99, 72%, 75%)
CMYK	cmyk(46.3%, 0%, 71.6%, 25.5%)
CIE-LAB	lab(69.41, -49.69, 57.33)
CIE-LCH	lch(69.41, 75.86, 130.92°)
OKLab	oklab(71.97% -0.1379 0.1296)
OKLCH	oklch(71.97% 0.189 136.8)
XYZ	xyz(24.5581, 39.9164, 9.8999)
Luminance	0.3992 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BE36 #8E36BE

analogous

#AABE36 #66BE36 #36BE4A

triadic

#66BE36 #3666BE #BE3666

tetradic

#66BE36 #36AABE #8E36BE #BE4A36

square

#66BE36 #36AABE #8E36BE #BE4A36

split-complementary

#66BE36 #4A36BE #BE36AA

monochromatic

#335F1B #4C8E28 #66BE36 #88D260 #ABDF8F

Accessibility & contrast

On white

2.34

#66BE36 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#66BE36 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BE36

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BE36	#FFFFFF	#000000	##000000
##66BE36	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C4AE1F

Deuteranopia (green-blind)

#B9A743

Tritanopia (blue-blind)

#61B7A3

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66be36;
/* rgb */ color: rgb(102, 190, 54);
/* oklch */ color: oklch(72.0% 0.189 136.8);

Tailwind

colors: {
  custom: {
    50: '#99d275',
    500: '#66be36',
    950: '#000000',
  },
}

SCSS

$custom: #66be36;
$custom-light: #99d275;
$custom-dark: #000000;

JSON

{
  "hex": "#66be36",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 54
  },
  "hsl": {
    "h": 98.824,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.7197,
    "c": 0.18923,
    "h": 136.8
  },
  "luminance": 0.39918
}

Semantic roles & 50–950 ramp

primary

#66BE36

secondary

#B286CA

accent

#49DFAA

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66BE36

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

Preview Lab → · Contrast checker → · Palette generator →