#66CD51#66CD51

#66CD51 is a light, vivid green. Relative luminance 0.471; OKLCH L 76.0% C 0.189 H 140.4°. Best body text is #000000 at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#66CD51
RGB	rgb(102, 205, 81)
HSL	hsl(110, 55%, 56%)
HSV	hsv(110, 60%, 80%)
CMYK	cmyk(50.2%, 0%, 60.5%, 19.6%)
CIE-LAB	lab(74.24, -53.16, 51.49)
CIE-LCH	lch(74.24, 74.01, 135.91°)
OKLab	oklab(76.01% -0.1456 0.1204)
OKLCH	oklch(76.01% 0.189 140.4)
XYZ	xyz(28.7948, 47.0793, 15.3529)
Luminance	0.4708 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CD51 #B851CD

analogous

#A4CD51 #66CD51 #51CD7A

triadic

#66CD51 #5166CD #CD5166

tetradic

#66CD51 #51A4CD #B851CD #CD7A51

square

#66CD51 #51A4CD #B851CD #CD7A51

split-complementary

#66CD51 #7A51CD #CD51A4

monochromatic

#347F25 #47AF32 #66CD51 #90DB81 #BAE8B0

Accessibility & contrast

On white

2.02

#66CD51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.42

#66CD51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CD51

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CD51	#FFFFFF	#000000	##000000
##66CD51	1.00	2.02	10.42	10.42
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.42	21.00	1.00	1.00
##000000	10.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D2BC43

Deuteranopia (green-blind)

#C5B35B

Tritanopia (blue-blind)

#5BC7B2

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66cd51;
/* rgb */ color: rgb(102, 205, 81);
/* oklch */ color: oklch(76.0% 0.189 140.4);

Tailwind

colors: {
  custom: {
    50: '#9add86',
    500: '#66cd51',
    950: '#000000',
  },
}

SCSS

$custom: #66cd51;
$custom-light: #9add86;
$custom-dark: #000000;

JSON

{
  "hex": "#66cd51",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 81
  },
  "hsl": {
    "h": 109.839,
    "s": 55.357,
    "l": 56.078
  },
  "oklch": {
    "l": 0.76008,
    "c": 0.18891,
    "h": 140.4
  },
  "luminance": 0.47082
}

Semantic roles & 50–950 ramp

primary

#66CD51

secondary

#CEA3D7

accent

#49DFC5

background

#F9FDF8

surface

#F2FBF0

border

#CCD4CB

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CD51

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

Preview Lab → · Contrast checker → · Palette generator →