#66CF3A#66CF3A

#66CF3A is a light, highly saturated green. Relative luminance 0.478; OKLCH L 76.3% C 0.207 H 138.2°. Best body text is #000000 at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#66CF3A
RGB	rgb(102, 207, 58)
HSL	hsl(102, 61%, 52%)
HSV	hsv(102, 72%, 81%)
CMYK	cmyk(50.7%, 0%, 72%, 18.8%)
CIE-LAB	lab(74.67, -55.94, 61.20)
CIE-LCH	lch(74.67, 82.92, 132.43°)
OKLab	oklab(76.3% -0.1545 0.1383)
OKLCH	oklch(76.3% 0.207 138.2)
XYZ	xyz(28.5550, 47.7538, 11.7149)
Luminance	0.4776 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CF3A #A33ACF

analogous

#B0CF3A #66CF3A #3ACF59

triadic

#66CF3A #3A66CF #CF3A66

tetradic

#66CF3A #3AB0CF #A33ACF #CF593A

square

#66CF3A #3AB0CF #A33ACF #CF593A

split-complementary

#66CF3A #593ACF #CF3AB0

monochromatic

#36731C #4DA428 #66CF3A #8CDB6B #B2E79C

Accessibility & contrast

On white

1.99

#66CF3A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.55

#66CF3A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CF3A

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CF3A	#FFFFFF	#000000	##000000
##66CF3A	1.00	1.99	10.55	10.55
#FFFFFF	1.99	1.00	21.00	21.00
#000000	10.55	21.00	1.00	1.00
##000000	10.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D5BD1F

Deuteranopia (green-blind)

#C8B449

Tritanopia (blue-blind)

#5EC8B2

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #66cf3a;
/* rgb */ color: rgb(102, 207, 58);
/* oklch */ color: oklch(76.3% 0.207 138.2);

Tailwind

colors: {
  custom: {
    50: '#9bde79',
    500: '#66cf3a',
    950: '#000000',
  },
}

SCSS

$custom: #66cf3a;
$custom-light: #9bde79;
$custom-dark: #000000;

JSON

{
  "hex": "#66cf3a",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 58
  },
  "hsl": {
    "h": 102.282,
    "s": 60.816,
    "l": 51.961
  },
  "oklch": {
    "l": 0.76302,
    "c": 0.20734,
    "h": 138.2
  },
  "luminance": 0.47756
}

Semantic roles & 50–950 ramp

primary

#66CF3A

secondary

#C092D3

accent

#44E4B5

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CF3A

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

Preview Lab → · Contrast checker → · Palette generator →