#66F178#66F178

#66F178 is a very light, highly saturated green. Relative luminance 0.671; OKLCH L 85.4% C 0.203 H 145.9°. Best body text is #000000 at 14.42:1 contrast (WCAG AA passes).

Color values

HEX	#66F178
RGB	rgb(102, 241, 120)
HSL	hsl(128, 83%, 67%)
HSV	hsv(128, 58%, 95%)
CMYK	cmyk(57.7%, 0%, 50.2%, 5.5%)
CIE-LAB	lab(85.55, -62.01, 47.01)
CIE-LCH	lch(85.55, 77.82, 142.83°)
OKLab	oklab(85.45% -0.1679 0.1135)
OKLCH	oklch(85.45% 0.203 145.9)
XYZ	xyz(40.3224, 67.0877, 28.5900)
Luminance	0.6709 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F178 #F166DF

analogous

#99F166 #66F178 #66F1BE

triadic

#66F178 #7866F1 #F17866

tetradic

#66F178 #6699F1 #F166DF #F1BE66

square

#66F178 #6699F1 #F166DF #F1BE66

split-complementary

#66F178 #BE66F1 #F16699

monochromatic

#12CA2A #2EEC47 #66F178 #9EF6A9 #D6FBDB

Accessibility & contrast

On white

1.46

#66F178 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.42

#66F178 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F178

14.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F178	#FFFFFF	#000000	##000000
##66F178	1.00	1.46	14.42	14.42
#FFFFFF	1.46	1.00	21.00	21.00
#000000	14.42	21.00	1.00	1.00
##000000	14.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F4DD6E

Deuteranopia (green-blind)

#E2D181

Tritanopia (blue-blind)

#49ECD5

Achromatopsia (no color)

#D6D6D6

Design tokens & code

CSS

--color: #66f178;
/* rgb */ color: rgb(102, 241, 120);
/* oklch */ color: oklch(85.4% 0.203 145.9);

Tailwind

colors: {
  custom: {
    50: '#9df7a1',
    500: '#66f178',
    950: '#000000',
  },
}

SCSS

$custom: #66f178;
$custom-light: #9df7a1;
$custom-dark: #000000;

JSON

{
  "hex": "#66f178",
  "rgb": {
    "r": 102,
    "g": 241,
    "b": 120
  },
  "hsl": {
    "h": 127.77,
    "s": 83.234,
    "l": 67.255
  },
  "oklch": {
    "l": 0.85447,
    "c": 0.20262,
    "h": 145.9
  },
  "luminance": 0.67091
}

Semantic roles & 50–950 ramp

primary

#66F178

secondary

#C734B4

accent

#06C3E0

background

#FCFFFC

surface

#F6FFF5

border

#D0D7CF

text

#0F170F

muted

#808580

Preview Lab

Preview with #66F178

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

Preview Lab → · Contrast checker → · Palette generator →