#66F581#66F581

#66F581 is a very light, vivid green. Relative luminance 0.697; OKLCH L 86.6% C 0.200 H 147.3°. Best body text is #000000 at 14.94:1 contrast (WCAG AA passes).

Color values

HEX	#66F581
RGB	rgb(102, 245, 129)
HSL	hsl(131, 88%, 68%)
HSV	hsv(131, 58%, 96%)
CMYK	cmyk(58.4%, 0%, 47.3%, 3.9%)
CIE-LAB	lab(86.85, -62.23, 44.36)
CIE-LCH	lch(86.85, 76.42, 144.51°)
OKLab	oklab(86.56% -0.1683 0.1079)
OKLCH	oklch(86.56% 0.2 147.3)
XYZ	xyz(42.0915, 69.7106, 32.0020)
Luminance	0.6972 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F581 #F566DA

analogous

#92F566 #66F581 #66F5C9

triadic

#66F581 #8166F5 #F58166

tetradic

#66F581 #6692F5 #F566DA #F5C966

square

#66F581 #6692F5 #F566DA #F5C966

split-complementary

#66F581 #C966F5 #F56692

monochromatic

#0ED333 #2DF152 #66F581 #9FF9B0 #D9FDE0

Accessibility & contrast

On white

1.41

#66F581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.94

#66F581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F581

14.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F581	#FFFFFF	#000000	##000000
##66F581	1.00	1.41	14.94	14.94
#FFFFFF	1.41	1.00	21.00	21.00
#000000	14.94	21.00	1.00	1.00
##000000	14.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8E178

Deuteranopia (green-blind)

#E5D489

Tritanopia (blue-blind)

#44F0DA

Achromatopsia (no color)

#D9D9D9

Design tokens & code

CSS

--color: #66f581;
/* rgb */ color: rgb(102, 245, 129);
/* oklch */ color: oklch(86.6% 0.200 147.3);

Tailwind

colors: {
  custom: {
    50: '#9ef9a7',
    500: '#66f581',
    950: '#000000',
  },
}

SCSS

$custom: #66f581;
$custom-light: #9ef9a7;
$custom-dark: #000000;

JSON

{
  "hex": "#66f581",
  "rgb": {
    "r": 102,
    "g": 245,
    "b": 129
  },
  "hsl": {
    "h": 131.329,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.86559,
    "c": 0.19992,
    "h": 147.3
  },
  "luminance": 0.69715
}

Semantic roles & 50–950 ramp

primary

#66F581

secondary

#CE31B0

accent

#01B9E4

background

#FCFFFC

surface

#F6FFF6

border

#D0D7D0

text

#101710

muted

#808580

Preview Lab

Preview with #66F581

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

Preview Lab → · Contrast checker → · Palette generator →