#66F257#66F257

#66F257 is a very light, highly saturated green. Relative luminance 0.670; OKLCH L 85.3% C 0.230 H 141.7°. Best body text is #000000 at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#66F257
RGB	rgb(102, 242, 87)
HSL	hsl(114, 86%, 65%)
HSV	hsv(114, 64%, 95%)
CMYK	cmyk(57.9%, 0%, 64%, 5.1%)
CIE-LAB	lab(85.51, -66.16, 61.52)
CIE-LCH	lch(85.51, 90.35, 137.08°)
OKLab	oklab(85.31% -0.1805 0.1424)
OKLCH	oklch(85.31% 0.23 141.7)
XYZ	xyz(38.9500, 67.0136, 19.8973)
Luminance	0.6702 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F257 #E357F2

analogous

#B3F257 #66F257 #57F296

triadic

#66F257 #5766F2 #F25766

tetradic

#66F257 #57B3F2 #E357F2 #F29657

square

#66F257 #57B3F2 #E357F2 #F29657

split-complementary

#66F257 #9657F2 #F257B3

monochromatic

#20C00F #32EE1E #66F257 #9AF690 #CDFBC9

Accessibility & contrast

On white

1.46

#66F257 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.40

#66F257 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F257

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F257	#FFFFFF	#000000	##000000
##66F257	1.00	1.46	14.40	14.40
#FFFFFF	1.46	1.00	21.00	21.00
#000000	14.40	21.00	1.00	1.00
##000000	14.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F8DD44

Deuteranopia (green-blind)

#E6D165

Tritanopia (blue-blind)

#51EBD2

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #66f257;
/* rgb */ color: rgb(102, 242, 87);
/* oklch */ color: oklch(85.3% 0.230 141.7);

Tailwind

colors: {
  custom: {
    50: '#9ff78c',
    500: '#66f257',
    950: '#000000',
  },
}

SCSS

$custom: #66f257;
$custom-light: #9ff78c;
$custom-dark: #000000;

JSON

{
  "hex": "#66f257",
  "rgb": {
    "r": 102,
    "g": 242,
    "b": 87
  },
  "hsl": {
    "h": 114.194,
    "s": 85.635,
    "l": 64.51
  },
  "oklch": {
    "l": 0.85307,
    "c": 0.22987,
    "h": 141.7
  },
  "luminance": 0.67017
}

Semantic roles & 50–950 ramp

primary

#66F257

secondary

#B030BE

accent

#03E2CD

background

#FDFFFC

surface

#F7FFF4

border

#D0D7CE

text

#10170D

muted

#81857F

Preview Lab

Preview with #66F257

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

Preview Lab → · Contrast checker → · Palette generator →