#66BC36#66BC36

#66BC36 is a light, vivid yellow-green. Relative luminance 0.391; OKLCH L 71.5% C 0.187 H 136.6°. Best body text is #000000 at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#66BC36
RGB	rgb(102, 188, 54)
HSL	hsl(99, 55%, 47%)
HSV	hsv(99, 71%, 74%)
CMYK	cmyk(45.7%, 0%, 71.3%, 26.3%)
CIE-LAB	lab(68.79, -48.89, 56.70)
CIE-LCH	lch(68.79, 74.87, 130.77°)
OKLab	oklab(71.46% -0.1357 0.1283)
OKLCH	oklch(71.46% 0.187 136.6)
XYZ	xyz(24.1279, 39.0560, 9.7565)
Luminance	0.3906 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC36 #8C36BC

analogous

#A9BC36 #66BC36 #36BC49

triadic

#66BC36 #3666BC #BC3666

tetradic

#66BC36 #36A9BC #8C36BC #BC4936

square

#66BC36 #36A9BC #8C36BC #BC4936

split-complementary

#66BC36 #4936BC #BC36A9

monochromatic

#325D1B #4C8C28 #66BC36 #87D15E #ABDF8E

Accessibility & contrast

On white

2.38

#66BC36 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.81

#66BC36 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC36

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC36	#FFFFFF	#000000	##000000
##66BC36	1.00	2.38	8.81	8.81
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.81	21.00	1.00	1.00
##000000	8.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AC20

Deuteranopia (green-blind)

#B7A543

Tritanopia (blue-blind)

#62B5A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc36;
/* rgb */ color: rgb(102, 188, 54);
/* oklch */ color: oklch(71.5% 0.187 136.6);

Tailwind

colors: {
  custom: {
    50: '#99d175',
    500: '#66bc36',
    950: '#000000',
  },
}

SCSS

$custom: #66bc36;
$custom-light: #99d175;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc36",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 54
  },
  "hsl": {
    "h": 98.507,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.71462,
    "c": 0.18676,
    "h": 136.6
  },
  "luminance": 0.39058
}

Semantic roles & 50–950 ramp

primary

#66BC36

secondary

#B185C9

accent

#49DFA9

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0E1409

muted

#7E827B

Preview Lab

Preview with #66BC36

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

Preview Lab → · Contrast checker → · Palette generator →