#66D577#66D577

#66D577 is a light, vivid green. Relative luminance 0.517; OKLCH L 78.5% C 0.166 H 147.0°. Best body text is #000000 at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#66D577
RGB	rgb(102, 213, 119)
HSL	hsl(129, 57%, 62%)
HSV	hsv(129, 52%, 84%)
CMYK	cmyk(52.1%, 0%, 44.1%, 16.5%)
CIE-LAB	lab(77.13, -51.41, 36.93)
CIE-LCH	lch(77.13, 63.30, 144.30°)
OKLab	oklab(78.53% -0.1394 0.0906)
OKLCH	oklch(78.53% 0.166 147)
XYZ	xyz(32.6015, 51.7425, 25.7185)
Luminance	0.5174 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D577 #D566C4

analogous

#8DD566 #66D577 #66D5AF

triadic

#66D577 #7766D5 #D57766

tetradic

#66D577 #668DD5 #D566C4 #D5AF66

square

#66D577 #668DD5 #D566C4 #D5AF66

split-complementary

#66D577 #AF66D5 #D5668D

monochromatic

#29973A #37C74D #66D577 #96E2A2 #C6EFCC

Accessibility & contrast

On white

1.85

#66D577 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.35

#66D577 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D577

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D577	#FFFFFF	#000000	##000000
##66D577	1.00	1.85	11.35	11.35
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.35	21.00	1.00	1.00
##000000	11.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7C570

Deuteranopia (green-blind)

#C8BA7D

Tritanopia (blue-blind)

#51D1BE

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #66d577;
/* rgb */ color: rgb(102, 213, 119);
/* oklch */ color: oklch(78.5% 0.166 147.0);

Tailwind

colors: {
  custom: {
    50: '#99e39f',
    500: '#66d577',
    950: '#000000',
  },
}

SCSS

$custom: #66d577;
$custom-light: #99e39f;
$custom-dark: #000000;

JSON

{
  "hex": "#66d577",
  "rgb": {
    "r": 102,
    "g": 213,
    "b": 119
  },
  "hsl": {
    "h": 129.189,
    "s": 56.923,
    "l": 61.765
  },
  "oklch": {
    "l": 0.78525,
    "c": 0.16624,
    "h": 147
  },
  "luminance": 0.51745
}

Semantic roles & 50–950 ramp

primary

#66D577

secondary

#9C438E

accent

#21ABC4

background

#FCFEFC

surface

#F5FCF5

border

#CFD5CF

text

#0F150F

muted

#808480

Preview Lab

Preview with #66D577

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

Preview Lab → · Contrast checker → · Palette generator →