#66FE91#66FE91

#66FE91 is a very light, vivid green. Relative luminance 0.758; OKLCH L 89.0% C 0.197 H 149.8°. Best body text is #000000 at 16.15:1 contrast (WCAG AA passes).

Color values

HEX	#66FE91
RGB	rgb(102, 254, 145)
HSL	hsl(137, 99%, 70%)
HSV	hsv(137, 60%, 100%)
CMYK	cmyk(59.8%, 0%, 42.9%, 0.4%)
CIE-LAB	lab(89.74, -63.14, 40.31)
CIE-LCH	lch(89.74, 74.91, 147.45°)
OKLab	oklab(89.01% -0.1706 0.0993)
OKLCH	oklch(89.01% 0.197 149.8)
XYZ	xyz(46.0287, 75.7483, 38.9778)
Luminance	0.7575 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66FE91 #FE66D3

analogous

#87FE66 #66FE91 #66FEDD

triadic

#66FE91 #9166FE #FE9166

tetradic

#66FE91 #6687FE #FE66D3 #FEDD66

square

#66FE91 #6687FE #FE66D3 #FEDD66

split-complementary

#66FE91 #DD66FE #FE6687

monochromatic

#02E843 #29FE65 #66FE91 #A3FEBD #E0FFE8

Accessibility & contrast

On white

1.30

#66FE91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.15

#66FE91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66FE91

16.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66FE91	#FFFFFF	#000000	##000000
##66FE91	1.00	1.30	16.15	16.15
#FFFFFF	1.30	1.00	21.00	21.00
#000000	16.15	21.00	1.00	1.00
##000000	16.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEA89

Deuteranopia (green-blind)

#ECDC98

Tritanopia (blue-blind)

#38FAE3

Achromatopsia (no color)

#E2E2E2

Design tokens & code

CSS

--color: #66fe91;
/* rgb */ color: rgb(102, 254, 145);
/* oklch */ color: oklch(89.0% 0.197 149.8);

Tailwind

colors: {
  custom: {
    50: '#9fffb2',
    500: '#66fe91',
    950: '#000000',
  },
}

SCSS

$custom: #66fe91;
$custom-light: #9fffb2;
$custom-dark: #000000;

JSON

{
  "hex": "#66fe91",
  "rgb": {
    "r": 102,
    "g": 254,
    "b": 145
  },
  "hsl": {
    "h": 136.974,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.89006,
    "c": 0.19739,
    "h": 149.8
  },
  "luminance": 0.75753
}

Semantic roles & 50–950 ramp

primary

#66FE91

secondary

#D92FA9

accent

#00A5E6

background

#FDFFFD

surface

#F7FFF8

border

#D0D7D1

text

#101811

muted

#818681

Preview Lab

Preview with #66FE91

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

Preview Lab → · Contrast checker → · Palette generator →