#66BF2A#66BF2A

#66BF2A is a light, vivid yellow-green. Relative luminance 0.403; OKLCH L 72.1% C 0.197 H 136.0°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#66BF2A
RGB	rgb(102, 191, 42)
HSL	hsl(96, 64%, 46%)
HSV	hsv(96, 78%, 75%)
CMYK	cmyk(46.6%, 0%, 78%, 25.1%)
CIE-LAB	lab(69.65, -50.85, 61.64)
CIE-LCH	lch(69.65, 79.90, 129.52°)
OKLab	oklab(72.14% -0.1418 0.1369)
OKLCH	oklch(72.14% 0.197 136)
XYZ	xyz(24.5276, 40.2520, 8.6670)
Luminance	0.4025 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BF2A #832ABF

analogous

#B0BF2A #66BF2A #2ABF39

triadic

#66BF2A #2A66BF #BF2A66

tetradic

#66BF2A #2AB0BF #832ABF #BF392A

square

#66BF2A #2AB0BF #832ABF #BF392A

split-complementary

#66BF2A #392ABF #BF2AB0

monochromatic

#305B14 #4B8D1F #66BF2A #86D84E #A8E380

Accessibility & contrast

On white

2.32

#66BF2A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#66BF2A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BF2A

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BF2A	#FFFFFF	#000000	##000000
##66BF2A	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)

#C6AF00

Deuteranopia (green-blind)

#BAA73B

Tritanopia (blue-blind)

#62B8A3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66bf2a;
/* rgb */ color: rgb(102, 191, 42);
/* oklch */ color: oklch(72.1% 0.197 136.0);

Tailwind

colors: {
  custom: {
    50: '#9ad370',
    500: '#66bf2a',
    950: '#000000',
  },
}

SCSS

$custom: #66bf2a;
$custom-light: #9ad370;
$custom-dark: #000000;

JSON

{
  "hex": "#66bf2a",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 42
  },
  "hsl": {
    "h": 95.839,
    "s": 63.948,
    "l": 45.686
  },
  "oklch": {
    "l": 0.72143,
    "c": 0.19709,
    "h": 136
  },
  "luminance": 0.40254
}

Semantic roles & 50–950 ramp

primary

#66BF2A

secondary

#AA79CC

accent

#41E7A4

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1408

muted

#7F837B

Preview Lab

Preview with #66BF2A

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

Preview Lab → · Contrast checker → · Palette generator →