#66EC99#66EC99

#66EC99 is a very light, vivid green. Relative luminance 0.651; OKLCH L 84.8% C 0.166 H 153.6°. Best body text is #000000 at 14.02:1 contrast (WCAG AA passes).

Color values

HEX	#66EC99
RGB	rgb(102, 236, 153)
HSL	hsl(143, 78%, 66%)
HSV	hsv(143, 57%, 93%)
CMYK	cmyk(56.8%, 0%, 35.2%, 7.5%)
CIE-LAB	lab(84.54, -54.90, 29.48)
CIE-LCH	lch(84.54, 62.31, 151.76°)
OKLab	oklab(84.78% -0.149 0.074)
OKLCH	oklch(84.78% 0.166 153.6)
XYZ	xyz(41.2215, 65.1118, 40.5263)
Luminance	0.6512 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC99 #EC66B9

analogous

#76EC66 #66EC99 #66ECDC

triadic

#66EC99 #9966EC #EC9966

tetradic

#66EC99 #6676EC #EC66B9 #ECDC66

square

#66EC99 #6676EC #EC66B9 #ECDC66

split-complementary

#66EC99 #DC66EC #EC6676

monochromatic

#18C058 #30E575 #66EC99 #9CF3BD #D3FAE2

Accessibility & contrast

On white

1.50

#66EC99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.02

#66EC99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC99

14.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC99	#FFFFFF	#000000	##000000
##66EC99	1.00	1.50	14.02	14.02
#FFFFFF	1.50	1.00	21.00	21.00
#000000	14.02	21.00	1.00	1.00
##000000	14.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ECDB94

Deuteranopia (green-blind)

#DACE9E

Tritanopia (blue-blind)

#3CE9D7

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66ec99;
/* rgb */ color: rgb(102, 236, 153);
/* oklch */ color: oklch(84.8% 0.166 153.6);

Tailwind

colors: {
  custom: {
    50: '#9cf3b7',
    500: '#66ec99',
    950: '#000000',
  },
}

SCSS

$custom: #66ec99;
$custom-light: #9cf3b7;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec99",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 153
  },
  "hsl": {
    "h": 142.836,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.84777,
    "c": 0.16634,
    "h": 153.6
  },
  "luminance": 0.65116
}

Semantic roles & 50–950 ramp

primary

#66EC99

secondary

#BE388B

accent

#0B8BDA

background

#FCFFFD

surface

#F6FEF8

border

#D0D6D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66EC99

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

Preview Lab → · Contrast checker → · Palette generator →