#66CF4E#66CF4E

#66CF4E is a light, vivid green. Relative luminance 0.480; OKLCH L 76.5% C 0.194 H 140.1°. Best body text is #000000 at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#66CF4E
RGB	rgb(102, 207, 78)
HSL	hsl(109, 57%, 56%)
HSV	hsv(109, 62%, 81%)
CMYK	cmyk(50.7%, 0%, 62.3%, 18.8%)
CIE-LAB	lab(74.82, -54.23, 53.45)
CIE-LCH	lch(74.82, 76.15, 135.42°)
OKLab	oklab(76.48% -0.1486 0.1243)
OKLCH	oklch(76.48% 0.194 140.1)
XYZ	xyz(29.1662, 47.9983, 14.9339)
Luminance	0.4800 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CF4E #B74ECF

analogous

#A6CF4E #66CF4E #4ECF76

triadic

#66CF4E #4E66CF #CF4E66

tetradic

#66CF4E #4EA6CF #B74ECF #CF764E

square

#66CF4E #4EA6CF #B74ECF #CF764E

split-complementary

#66CF4E #764ECF #CF4EA6

monochromatic

#348023 #48B030 #66CF4E #90DC7E #B9E9AE

Accessibility & contrast

On white

1.98

#66CF4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.60

#66CF4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CF4E

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CF4E	#FFFFFF	#000000	##000000
##66CF4E	1.00	1.98	10.60	10.60
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.60	21.00	1.00	1.00
##000000	10.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BE3F

Deuteranopia (green-blind)

#C7B559

Tritanopia (blue-blind)

#5BC9B4

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #66cf4e;
/* rgb */ color: rgb(102, 207, 78);
/* oklch */ color: oklch(76.5% 0.194 140.1);

Tailwind

colors: {
  custom: {
    50: '#9ade84',
    500: '#66cf4e',
    950: '#000000',
  },
}

SCSS

$custom: #66cf4e;
$custom-light: #9ade84;
$custom-dark: #000000;

JSON

{
  "hex": "#66cf4e",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 78
  },
  "hsl": {
    "h": 108.837,
    "s": 57.333,
    "l": 55.882
  },
  "oklch": {
    "l": 0.76479,
    "c": 0.19378,
    "h": 140.1
  },
  "luminance": 0.48
}

Semantic roles & 50–950 ramp

primary

#66CF4E

secondary

#CDA2D7

accent

#47E1C4

background

#FAFDF8

surface

#F3FBEF

border

#CDD4CA

text

#0F150B

muted

#7F837C

Preview Lab

Preview with #66CF4E

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

Preview Lab → · Contrast checker → · Palette generator →