#66E899#66E899

#66E899 is a very light, vivid green. Relative luminance 0.628; OKLCH L 83.8% C 0.161 H 154.2°. Best body text is #000000 at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#66E899
RGB	rgb(102, 232, 153)
HSL	hsl(144, 74%, 65%)
HSV	hsv(144, 56%, 91%)
CMYK	cmyk(56%, 0%, 34.1%, 9%)
CIE-LAB	lab(83.36, -53.30, 27.89)
CIE-LCH	lch(83.36, 60.16, 152.38°)
OKLab	oklab(83.81% -0.1448 0.0701)
OKLCH	oklch(83.81% 0.161 154.2)
XYZ	xyz(40.0827, 62.8342, 40.1467)
Luminance	0.6284 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E899 #E866B5

analogous

#74E866 #66E899 #66E8DA

triadic

#66E899 #9966E8 #E89966

tetradic

#66E899 #6674E8 #E866B5 #E8DA66

square

#66E899 #6674E8 #E866B5 #E8DA66

split-complementary

#66E899 #DA66E8 #E86674

monochromatic

#1CB859 #31E076 #66E899 #9BF0BC #D0F8E0

Accessibility & contrast

On white

1.55

#66E899 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.57

#66E899 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E899

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E899	#FFFFFF	#000000	##000000
##66E899	1.00	1.55	13.57	13.57
#FFFFFF	1.55	1.00	21.00	21.00
#000000	13.57	21.00	1.00	1.00
##000000	13.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E8D794

Deuteranopia (green-blind)

#D6CB9E

Tritanopia (blue-blind)

#3EE6D4

Achromatopsia (no color)

#D0D0D0

Design tokens & code

CSS

--color: #66e899;
/* rgb */ color: rgb(102, 232, 153);
/* oklch */ color: oklch(83.8% 0.161 154.2);

Tailwind

colors: {
  custom: {
    50: '#9cf0b7',
    500: '#66e899',
    950: '#000000',
  },
}

SCSS

$custom: #66e899;
$custom-light: #9cf0b7;
$custom-dark: #000000;

JSON

{
  "hex": "#66e899",
  "rgb": {
    "r": 102,
    "g": 232,
    "b": 153
  },
  "hsl": {
    "h": 143.538,
    "s": 73.864,
    "l": 65.49
  },
  "oklch": {
    "l": 0.83805,
    "c": 0.16091,
    "h": 154.2
  },
  "luminance": 0.62838
}

Semantic roles & 50–950 ramp

primary

#66E899

secondary

#B83A87

accent

#1088D6

background

#FCFFFD

surface

#F5FEF8

border

#CFD6D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66E899

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

Preview Lab → · Contrast checker → · Palette generator →