#66F379#66F379

#66F379 is a very light, highly saturated green. Relative luminance 0.683; OKLCH L 86.0% C 0.204 H 146.0°. Best body text is #000000 at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#66F379
RGB	rgb(102, 243, 121)
HSL	hsl(128, 85%, 68%)
HSV	hsv(128, 58%, 95%)
CMYK	cmyk(58%, 0%, 50.2%, 4.7%)
CIE-LAB	lab(86.16, -62.61, 47.29)
CIE-LCH	lch(86.16, 78.46, 142.93°)
OKLab	oklab(85.95% -0.1695 0.1141)
OKLCH	oklch(85.95% 0.204 146)
XYZ	xyz(40.9787, 68.3026, 29.1097)
Luminance	0.6831 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F379 #F366E0

analogous

#99F366 #66F379 #66F3BF

triadic

#66F379 #7966F3 #F37966

tetradic

#66F379 #6699F3 #F366E0 #F3BF66

square

#66F379 #6699F3 #F366E0 #F3BF66

split-complementary

#66F379 #BF66F3 #F36699

monochromatic

#10CE2A #2DEF47 #66F379 #9FF7AB #D7FCDC

Accessibility & contrast

On white

1.43

#66F379 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.66

#66F379 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F379

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F379	#FFFFFF	#000000	##000000
##66F379	1.00	1.43	14.66	14.66
#FFFFFF	1.43	1.00	21.00	21.00
#000000	14.66	21.00	1.00	1.00
##000000	14.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F6DF6F

Deuteranopia (green-blind)

#E4D382

Tritanopia (blue-blind)

#47EED7

Achromatopsia (no color)

#D7D7D7

Design tokens & code

CSS

--color: #66f379;
/* rgb */ color: rgb(102, 243, 121);
/* oklch */ color: oklch(86.0% 0.204 146.0);

Tailwind

colors: {
  custom: {
    50: '#9ef8a2',
    500: '#66f379',
    950: '#000000',
  },
}

SCSS

$custom: #66f379;
$custom-light: #9ef8a2;
$custom-dark: #000000;

JSON

{
  "hex": "#66f379",
  "rgb": {
    "r": 102,
    "g": 243,
    "b": 121
  },
  "hsl": {
    "h": 128.085,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.85952,
    "c": 0.20432,
    "h": 146
  },
  "luminance": 0.68306
}

Semantic roles & 50–950 ramp

primary

#66F379

secondary

#CA33B6

accent

#04C4E2

background

#FCFFFC

surface

#F6FFF5

border

#D0D7CF

text

#10170F

muted

#808580

Preview Lab

Preview with #66F379

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

Preview Lab → · Contrast checker → · Palette generator →