#66D338#66D338

#66D338 is a light, highly saturated green. Relative luminance 0.497; OKLCH L 77.3% C 0.213 H 138.2°. Best body text is #000000 at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#66D338
RGB	rgb(102, 211, 56)
HSL	hsl(102, 64%, 52%)
HSV	hsv(102, 73%, 83%)
CMYK	cmyk(51.7%, 0%, 73.5%, 17.3%)
CIE-LAB	lab(75.88, -57.57, 63.12)
CIE-LCH	lch(75.88, 85.43, 132.37°)
OKLab	oklab(77.3% -0.159 0.142)
OKLCH	oklch(77.3% 0.213 138.2)
XYZ	xyz(29.4865, 49.6966, 11.7792)
Luminance	0.4970 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D338 #A538D3

analogous

#B3D338 #66D338 #38D358

triadic

#66D338 #3866D3 #D33866

tetradic

#66D338 #38B3D3 #A538D3 #D35838

square

#66D338 #38B3D3 #A538D3 #D35838

split-complementary

#66D338 #5838D3 #D338B3

monochromatic

#36761A #4CA925 #66D338 #8DDE6A #B3E99C

Accessibility & contrast

On white

1.92

#66D338 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.94

#66D338 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D338

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D338	#FFFFFF	#000000	##000000
##66D338	1.00	1.92	10.94	10.94
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.94	21.00	1.00	1.00
##000000	10.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC119

Deuteranopia (green-blind)

#CBB848

Tritanopia (blue-blind)

#5DCCB5

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #66d338;
/* rgb */ color: rgb(102, 211, 56);
/* oklch */ color: oklch(77.3% 0.213 138.2);

Tailwind

colors: {
  custom: {
    50: '#9ce179',
    500: '#66d338',
    950: '#000000',
  },
}

SCSS

$custom: #66d338;
$custom-light: #9ce179;
$custom-dark: #000000;

JSON

{
  "hex": "#66d338",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 56
  },
  "hsl": {
    "h": 102.194,
    "s": 63.786,
    "l": 52.353
  },
  "oklch": {
    "l": 0.77297,
    "c": 0.2132,
    "h": 138.2
  },
  "luminance": 0.49699
}

Semantic roles & 50–950 ramp

primary

#66D338

secondary

#C192D5

accent

#41E7B6

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D338

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

Preview Lab → · Contrast checker → · Palette generator →