#66D451#66D451

#66D451 is a light, vivid green. Relative luminance 0.505; OKLCH L 77.8% C 0.198 H 140.6°. Best body text is #000000 at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#66D451
RGB	rgb(102, 212, 81)
HSL	hsl(110, 60%, 57%)
HSV	hsv(110, 62%, 83%)
CMYK	cmyk(51.9%, 0%, 61.8%, 16.9%)
CIE-LAB	lab(76.38, -55.84, 53.90)
CIE-LCH	lch(76.38, 77.61, 136.01°)
OKLab	oklab(77.77% -0.1528 0.1256)
OKLCH	oklch(77.77% 0.198 140.6)
XYZ	xyz(30.5068, 50.5034, 15.9235)
Luminance	0.5051 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D451 #BF51D4

analogous

#A7D451 #66D451 #51D47E

triadic

#66D451 #5166D4 #D45166

tetradic

#66D451 #51A7D4 #BF51D4 #D47E51

square

#66D451 #51A7D4 #BF51D4 #D47E51

split-complementary

#66D451 #7E51D4 #D451A7

monochromatic

#328922 #44BA2E #66D451 #91E082 #BCECB3

Accessibility & contrast

On white

1.89

#66D451 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.10

#66D451 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D451

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D451	#FFFFFF	#000000	##000000
##66D451	1.00	1.89	11.10	11.10
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.10	21.00	1.00	1.00
##000000	11.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C242

Deuteranopia (green-blind)

#CBB95C

Tritanopia (blue-blind)

#5ACEB8

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d451;
/* rgb */ color: rgb(102, 212, 81);
/* oklch */ color: oklch(77.8% 0.198 140.6);

Tailwind

colors: {
  custom: {
    50: '#9be287',
    500: '#66d451',
    950: '#000000',
  },
}

SCSS

$custom: #66d451;
$custom-light: #9be287;
$custom-dark: #000000;

JSON

{
  "hex": "#66d451",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 81
  },
  "hsl": {
    "h": 110.382,
    "s": 60.369,
    "l": 57.451
  },
  "oklch": {
    "l": 0.77765,
    "c": 0.19781,
    "h": 140.6
  },
  "luminance": 0.50506
}

Semantic roles & 50–950 ramp

primary

#66D451

secondary

#813A8F

accent

#44E4CA

background

#FCFEFC

surface

#F5FCF3

border

#CFD5CD

text

#0F150C

muted

#80847F

Preview Lab

Preview with #66D451

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

Preview Lab → · Contrast checker → · Palette generator →