#66BF2C#66BF2C

#66BF2C is a light, vivid yellow-green. Relative luminance 0.403; OKLCH L 72.2% C 0.196 H 136.1°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#66BF2C
RGB	rgb(102, 191, 44)
HSL	hsl(96, 63%, 46%)
HSV	hsv(96, 77%, 75%)
CMYK	cmyk(46.6%, 0%, 77%, 25.1%)
CIE-LAB	lab(69.66, -50.73, 61.02)
CIE-LCH	lch(69.66, 79.36, 129.74°)
OKLab	oklab(72.16% -0.1414 0.1359)
OKLCH	oklch(72.16% 0.196 136.1)
XYZ	xyz(24.5643, 40.2666, 8.8603)
Luminance	0.4027 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BF2C #852CBF

analogous

#AFBF2C #66BF2C #2CBF3C

triadic

#66BF2C #2C66BF #BF2C66

tetradic

#66BF2C #2CAFBF #852CBF #BF3C2C

square

#66BF2C #2CAFBF #852CBF #BF3C2C

split-complementary

#66BF2C #3C2CBF #BF2CAF

monochromatic

#315C15 #4B8D21 #66BF2C #86D751 #A9E283

Accessibility & contrast

On white

2.32

#66BF2C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#66BF2C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BF2C

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BF2C	#FFFFFF	#000000	##000000
##66BF2C	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6AF03

Deuteranopia (green-blind)

#BAA73C

Tritanopia (blue-blind)

#62B8A3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66bf2c;
/* rgb */ color: rgb(102, 191, 44);
/* oklch */ color: oklch(72.2% 0.196 136.1);

Tailwind

colors: {
  custom: {
    50: '#9ad370',
    500: '#66bf2c',
    950: '#000000',
  },
}

SCSS

$custom: #66bf2c;
$custom-light: #9ad370;
$custom-dark: #000000;

JSON

{
  "hex": "#66bf2c",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 44
  },
  "hsl": {
    "h": 96.327,
    "s": 62.553,
    "l": 46.078
  },
  "oklch": {
    "l": 0.72155,
    "c": 0.1961,
    "h": 136.1
  },
  "luminance": 0.40268
}

Semantic roles & 50–950 ramp

primary

#66BF2C

secondary

#AC7BCC

accent

#42E6A5

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1408

muted

#7E837B

Preview Lab

Preview with #66BF2C

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

Preview Lab → · Contrast checker → · Palette generator →