#66ED99#66ED99

#66ED99 is a very light, vivid green. Relative luminance 0.657; OKLCH L 85.0% C 0.168 H 153.5°. Best body text is #000000 at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#66ED99
RGB	rgb(102, 237, 153)
HSL	hsl(143, 79%, 66%)
HSV	hsv(143, 57%, 93%)
CMYK	cmyk(57%, 0%, 35.4%, 7.1%)
CIE-LAB	lab(84.84, -55.29, 29.88)
CIE-LCH	lch(84.84, 62.85, 151.61°)
OKLab	oklab(85.02% -0.15 0.0749)
OKLCH	oklch(85.02% 0.168 153.5)
XYZ	xyz(41.5102, 65.6892, 40.6226)
Luminance	0.6569 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ED99 #ED66BA

analogous

#77ED66 #66ED99 #66EDDD

triadic

#66ED99 #9966ED #ED9966

tetradic

#66ED99 #6677ED #ED66BA #EDDD66

square

#66ED99 #6677ED #ED66BA #EDDD66

split-complementary

#66ED99 #DD66ED #ED6677

monochromatic

#17C257 #2FE774 #66ED99 #9DF3BE #D4FAE2

Accessibility & contrast

On white

1.49

#66ED99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.14

#66ED99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ED99

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ED99	#FFFFFF	#000000	##000000
##66ED99	1.00	1.49	14.14	14.14
#FFFFFF	1.49	1.00	21.00	21.00
#000000	14.14	21.00	1.00	1.00
##000000	14.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EDDC93

Deuteranopia (green-blind)

#DBCF9E

Tritanopia (blue-blind)

#3CEAD7

Achromatopsia (no color)

#D4D4D4

Design tokens & code

CSS

--color: #66ed99;
/* rgb */ color: rgb(102, 237, 153);
/* oklch */ color: oklch(85.0% 0.168 153.5);

Tailwind

colors: {
  custom: {
    50: '#9cf4b7',
    500: '#66ed99',
    950: '#000000',
  },
}

SCSS

$custom: #66ed99;
$custom-light: #9cf4b7;
$custom-dark: #000000;

JSON

{
  "hex": "#66ed99",
  "rgb": {
    "r": 102,
    "g": 237,
    "b": 153
  },
  "hsl": {
    "h": 142.667,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.8502,
    "c": 0.16769,
    "h": 153.5
  },
  "luminance": 0.65693
}

Semantic roles & 50–950 ramp

primary

#66ED99

secondary

#C0378C

accent

#0A8CDB

background

#FCFFFD

surface

#F6FEF8

border

#D0D6D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66ED99

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

Preview Lab → · Contrast checker → · Palette generator →