#66EF91#66EF91

#66EF91 is a very light, vivid green. Relative luminance 0.666; OKLCH L 85.4% C 0.178 H 151.1°. Best body text is #000000 at 14.32:1 contrast (WCAG AA passes).

Color values

HEX	#66EF91
RGB	rgb(102, 239, 145)
HSL	hsl(139, 81%, 67%)
HSV	hsv(139, 57%, 94%)
CMYK	cmyk(57.3%, 0%, 39.3%, 6.3%)
CIE-LAB	lab(85.30, -57.46, 34.52)
CIE-LCH	lch(85.30, 67.04, 149.00°)
OKLab	oklab(85.36% -0.1556 0.0858)
OKLCH	oklch(85.36% 0.178 151.1)
XYZ	xyz(41.4537, 66.5983, 37.4528)
Luminance	0.6660 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EF91 #EF66C4

analogous

#80EF66 #66EF91 #66EFD6

triadic

#66EF91 #9166EF #EF9166

tetradic

#66EF91 #6680EF #EF66C4 #EFD666

square

#66EF91 #6680EF #EF66C4 #EFD666

split-complementary

#66EF91 #D666EF #EF6680

monochromatic

#15C64C #2FE969 #66EF91 #9DF5B9 #D5FBE1

Accessibility & contrast

On white

1.47

#66EF91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.32

#66EF91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EF91

14.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EF91	#FFFFFF	#000000	##000000
##66EF91	1.00	1.47	14.32	14.32
#FFFFFF	1.47	1.00	21.00	21.00
#000000	14.32	21.00	1.00	1.00
##000000	14.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F0DD8A

Deuteranopia (green-blind)

#DED097

Tritanopia (blue-blind)

#3FECD8

Achromatopsia (no color)

#D5D5D5

Design tokens & code

CSS

--color: #66ef91;
/* rgb */ color: rgb(102, 239, 145);
/* oklch */ color: oklch(85.4% 0.178 151.1);

Tailwind

colors: {
  custom: {
    50: '#9df5b2',
    500: '#66ef91',
    950: '#000000',
  },
}

SCSS

$custom: #66ef91;
$custom-light: #9df5b2;
$custom-dark: #000000;

JSON

{
  "hex": "#66ef91",
  "rgb": {
    "r": 102,
    "g": 239,
    "b": 145
  },
  "hsl": {
    "h": 138.832,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.85357,
    "c": 0.17764,
    "h": 151.1
  },
  "luminance": 0.66602
}

Semantic roles & 50–950 ramp

primary

#66EF91

secondary

#C33697

accent

#089ADD

background

#FCFFFD

surface

#F6FEF8

border

#D0D6D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66EF91

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

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