#66D02A#66D02A

#66D02A is a light, highly saturated yellow-green. Relative luminance 0.481; OKLCH L 76.5% C 0.217 H 137.2°. Best body text is #000000 at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#66D02A
RGB	rgb(102, 208, 42)
HSL	hsl(98, 66%, 49%)
HSV	hsv(98, 80%, 82%)
CMYK	cmyk(51%, 0%, 79.8%, 18.4%)
CIE-LAB	lab(74.89, -57.29, 66.54)
CIE-LCH	lch(74.89, 87.81, 130.73°)
OKLab	oklab(76.46% -0.1591 0.1472)
OKLCH	oklch(76.46% 0.217 137.2)
XYZ	xyz(28.4524, 48.1016, 9.9753)
Luminance	0.4810 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D02A #942AD0

analogous

#B9D02A #66D02A #2AD041

triadic

#66D02A #2A66D0 #D02A66

tetradic

#66D02A #2AB9D0 #942AD0 #D0412A

square

#66D02A #2AB9D0 #942AD0 #D0412A

split-complementary

#66D02A #412AD0 #D02AB9

monochromatic

#346A15 #4D9D20 #66D02A #89DE5A #AEE88D

Accessibility & contrast

On white

1.98

#66D02A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.62

#66D02A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D02A

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D02A	#FFFFFF	#000000	##000000
##66D02A	1.00	1.98	10.62	10.62
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.62	21.00	1.00	1.00
##000000	10.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7BE00

Deuteranopia (green-blind)

#C9B53E

Tritanopia (blue-blind)

#5FC8B2

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #66d02a;
/* rgb */ color: rgb(102, 208, 42);
/* oklch */ color: oklch(76.5% 0.217 137.2);

Tailwind

colors: {
  custom: {
    50: '#9cdf72',
    500: '#66d02a',
    950: '#000000',
  },
}

SCSS

$custom: #66d02a;
$custom-light: #9cdf72;
$custom-dark: #000000;

JSON

{
  "hex": "#66d02a",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 42
  },
  "hsl": {
    "h": 98.313,
    "s": 66.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.76455,
    "c": 0.21673,
    "h": 137.2
  },
  "luminance": 0.48104
}

Semantic roles & 50–950 ramp

primary

#66D02A

secondary

#B684D2

accent

#3EE9AC

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66D02A

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

Preview Lab → · Contrast checker → · Palette generator →