#66D351#66D351

#66D351 is a light, vivid green. Relative luminance 0.500; OKLCH L 77.5% C 0.197 H 140.6°. Best body text is #000000 at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#66D351
RGB	rgb(102, 211, 81)
HSL	hsl(110, 60%, 57%)
HSV	hsv(110, 62%, 83%)
CMYK	cmyk(51.7%, 0%, 61.6%, 17.3%)
CIE-LAB	lab(76.07, -55.46, 53.56)
CIE-LCH	lch(76.07, 77.10, 136.00°)
OKLab	oklab(77.51% -0.1518 0.1248)
OKLCH	oklch(77.51% 0.197 140.6)
XYZ	xyz(30.2576, 50.0050, 15.8405)
Luminance	0.5001 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D351 #BE51D3

analogous

#A7D351 #66D351 #51D37D

triadic

#66D351 #5166D3 #D35166

tetradic

#66D351 #51A7D3 #BE51D3 #D37D51

square

#66D351 #51A7D3 #BE51D3 #D37D51

split-complementary

#66D351 #7D51D3 #D351A7

monochromatic

#338722 #45B82F #66D351 #91DF82 #BCECB3

Accessibility & contrast

On white

1.91

#66D351 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.00

#66D351 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D351

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D351	#FFFFFF	#000000	##000000
##66D351	1.00	1.91	11.00	11.00
#FFFFFF	1.91	1.00	21.00	21.00
#000000	11.00	21.00	1.00	1.00
##000000	11.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8C142

Deuteranopia (green-blind)

#CAB85C

Tritanopia (blue-blind)

#5ACDB7

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d351;
/* rgb */ color: rgb(102, 211, 81);
/* oklch */ color: oklch(77.5% 0.197 140.6);

Tailwind

colors: {
  custom: {
    50: '#9be187',
    500: '#66d351',
    950: '#000000',
  },
}

SCSS

$custom: #66d351;
$custom-light: #9be187;
$custom-dark: #000000;

JSON

{
  "hex": "#66d351",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 81
  },
  "hsl": {
    "h": 110.308,
    "s": 59.633,
    "l": 57.255
  },
  "oklch": {
    "l": 0.77514,
    "c": 0.19655,
    "h": 140.6
  },
  "luminance": 0.50007
}

Semantic roles & 50–950 ramp

primary

#66D351

secondary

#803A8E

accent

#45E3C9

background

#FCFEFC

surface

#F5FCF3

border

#CFD5CD

text

#0F150C

muted

#80847F

Preview Lab

Preview with #66D351

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

Preview Lab → · Contrast checker → · Palette generator →