#66D559#66D559

#66D559 is a light, vivid green. Relative luminance 0.511; OKLCH L 78.1% C 0.193 H 141.6°. Best body text is #000000 at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#66D559
RGB	rgb(102, 213, 89)
HSL	hsl(114, 60%, 59%)
HSV	hsv(114, 58%, 84%)
CMYK	cmyk(52.1%, 0%, 58.2%, 16.5%)
CIE-LAB	lab(76.76, -55.37, 50.82)
CIE-LCH	lch(76.76, 75.15, 137.46°)
OKLab	oklab(78.1% -0.1511 0.1197)
OKLCH	oklch(78.1% 0.193 141.6)
XYZ	xyz(31.0754, 51.1321, 17.6812)
Luminance	0.5113 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D559 #C859D5

analogous

#A4D559 #66D559 #59D58A

triadic

#66D559 #5966D5 #D55966

tetradic

#66D559 #59A4D5 #C859D5 #D58A59

square

#66D559 #59A4D5 #C859D5 #D58A59

split-complementary

#66D559 #8A59D5 #D559A4

monochromatic

#2F8F24 #40C031 #66D559 #93E18A #C0EEBB

Accessibility & contrast

On white

1.87

#66D559 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.23

#66D559 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D559

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D559	#FFFFFF	#000000	##000000
##66D559	1.00	1.87	11.23	11.23
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.23	21.00	1.00	1.00
##000000	11.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC34C

Deuteranopia (green-blind)

#CBBA63

Tritanopia (blue-blind)

#58CFBA

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66d559;
/* rgb */ color: rgb(102, 213, 89);
/* oklch */ color: oklch(78.1% 0.193 141.6);

Tailwind

colors: {
  custom: {
    50: '#9ae38c',
    500: '#66d559',
    950: '#000000',
  },
}

SCSS

$custom: #66d559;
$custom-light: #9ae38c;
$custom-dark: #000000;

JSON

{
  "hex": "#66d559",
  "rgb": {
    "r": 102,
    "g": 213,
    "b": 89
  },
  "hsl": {
    "h": 113.71,
    "s": 59.615,
    "l": 59.216
  },
  "oklch": {
    "l": 0.78103,
    "c": 0.19278,
    "h": 141.6
  },
  "luminance": 0.51135
}

Semantic roles & 50–950 ramp

primary

#66D559

secondary

#8C3D95

accent

#45E3D2

background

#FCFEFC

surface

#F5FCF4

border

#CFD5CE

text

#0F150C

muted

#80847F

Preview Lab

Preview with #66D559

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

Preview Lab → · Contrast checker → · Palette generator →