#66CF4B#66CF4B

#66CF4B is a light, vivid green. Relative luminance 0.480; OKLCH L 76.4% C 0.196 H 139.8°. Best body text is #000000 at 10.59:1 contrast (WCAG AA passes).

Color values

HEX	#66CF4B
RGB	rgb(102, 207, 75)
HSL	hsl(108, 58%, 55%)
HSV	hsv(108, 64%, 81%)
CMYK	cmyk(50.7%, 0%, 63.8%, 18.8%)
CIE-LAB	lab(74.80, -54.52, 54.70)
CIE-LCH	lch(74.80, 77.23, 134.91°)
OKLab	oklab(76.45% -0.1496 0.1266)
OKLCH	oklch(76.45% 0.196 139.8)
XYZ	xyz(29.0611, 47.9562, 14.3803)
Luminance	0.4796 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CF4B #B44BCF

analogous

#A8CF4B #66CF4B #4BCF72

triadic

#66CF4B #4B66CF #CF4B66

tetradic

#66CF4B #4BA8CF #B44BCF #CF724B

square

#66CF4B #4BA8CF #B44BCF #CF724B

split-complementary

#66CF4B #724BCF #CF4BA8

monochromatic

#357E22 #49AE2E #66CF4B #8FDC7B #B8E9AC

Accessibility & contrast

On white

1.98

#66CF4B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.59

#66CF4B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CF4B

10.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CF4B	#FFFFFF	#000000	##000000
##66CF4B	1.00	1.98	10.59	10.59
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.59	21.00	1.00	1.00
##000000	10.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D5BE3B

Deuteranopia (green-blind)

#C7B556

Tritanopia (blue-blind)

#5CC8B3

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #66cf4b;
/* rgb */ color: rgb(102, 207, 75);
/* oklch */ color: oklch(76.4% 0.196 139.8);

Tailwind

colors: {
  custom: {
    50: '#9ade83',
    500: '#66cf4b',
    950: '#000000',
  },
}

SCSS

$custom: #66cf4b;
$custom-light: #9ade83;
$custom-dark: #000000;

JSON

{
  "hex": "#66cf4b",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 75
  },
  "hsl": {
    "h": 107.727,
    "s": 57.895,
    "l": 55.294
  },
  "oklch": {
    "l": 0.76448,
    "c": 0.19603,
    "h": 139.8
  },
  "luminance": 0.47958
}

Semantic roles & 50–950 ramp

primary

#66CF4B

secondary

#CB9FD6

accent

#47E1C2

background

#FAFDF8

surface

#F3FBEF

border

#CDD4CA

text

#0F150B

muted

#7F837C

Preview Lab

Preview with #66CF4B

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

Preview Lab → · Contrast checker → · Palette generator →