#66D899#66D899

#66D899 is a light, vivid green. Relative luminance 0.542; OKLCH L 79.9% C 0.139 H 156.9°. Best body text is #000000 at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#66D899
RGB	rgb(102, 216, 153)
HSL	hsl(147, 59%, 62%)
HSV	hsv(147, 53%, 85%)
CMYK	cmyk(52.8%, 0%, 29.2%, 15.3%)
CIE-LAB	lab(78.60, -46.72, 21.41)
CIE-LCH	lch(78.60, 51.39, 155.38°)
OKLab	oklab(79.92% -0.1277 0.0544)
OKLCH	oklch(79.92% 0.139 156.9)
XYZ	xyz(35.7822, 54.2333, 38.7133)
Luminance	0.5424 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D899 #D866A5

analogous

#6CD866 #66D899 #66D8D2

triadic

#66D899 #9966D8 #D89966

tetradic

#66D899 #666CD8 #D866A5 #D8D266

square

#66D899 #666CD8 #D866A5 #D8D266

split-complementary

#66D899 #D266D8 #D8666C

monochromatic

#289C5C #35CC78 #66D899 #97E4BA #C8F1DA

Accessibility & contrast

On white

1.77

#66D899 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.85

#66D899 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D899

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D899	#FFFFFF	#000000	##000000
##66D899	1.00	1.77	11.85	11.85
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.85	21.00	1.00	1.00
##000000	11.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7C995

Deuteranopia (green-blind)

#C6BE9D

Tritanopia (blue-blind)

#44D6C7

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66d899;
/* rgb */ color: rgb(102, 216, 153);
/* oklch */ color: oklch(79.9% 0.139 156.9);

Tailwind

colors: {
  custom: {
    50: '#99e5b7',
    500: '#66d899',
    950: '#000000',
  },
}

SCSS

$custom: #66d899;
$custom-light: #99e5b7;
$custom-dark: #000000;

JSON

{
  "hex": "#66d899",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 153
  },
  "hsl": {
    "h": 146.842,
    "s": 59.375,
    "l": 62.353
  },
  "oklch": {
    "l": 0.79915,
    "c": 0.13878,
    "h": 156.9
  },
  "luminance": 0.54236
}

Semantic roles & 50–950 ramp

primary

#66D899

secondary

#A04276

accent

#1E7CC7

background

#FCFEFD

surface

#F5FCF8

border

#CFD5D1

text

#0F1611

muted

#808481

Preview Lab

Preview with #66D899

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

Preview Lab → · Contrast checker → · Palette generator →