#66EC9B#66EC9B

#66EC9B is a very light, vivid green. Relative luminance 0.652; OKLCH L 84.8% C 0.165 H 154.2°. Best body text is #000000 at 14.04:1 contrast (WCAG AA passes).

Color values

HEX	#66EC9B
RGB	rgb(102, 236, 155)
HSL	hsl(144, 78%, 66%)
HSV	hsv(144, 57%, 93%)
CMYK	cmyk(56.8%, 0%, 34.3%, 7.5%)
CIE-LAB	lab(84.58, -54.54, 28.51)
CIE-LCH	lch(84.58, 61.54, 152.40°)
OKLab	oklab(84.82% -0.1481 0.0717)
OKLCH	oklch(84.82% 0.165 154.2)
XYZ	xyz(41.3880, 65.1784, 41.4036)
Luminance	0.6518 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC9B #EC66B7

analogous

#74EC66 #66EC9B #66ECDE

triadic

#66EC9B #9B66EC #EC9B66

tetradic

#66EC9B #6674EC #EC66B7 #ECDE66

square

#66EC9B #6674EC #EC66B7 #ECDE66

split-complementary

#66EC9B #DE66EC #EC6674

monochromatic

#18C05A #30E577 #66EC9B #9CF3BF #D3FAE2

Accessibility & contrast

On white

1.50

#66EC9B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.04

#66EC9B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC9B

14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC9B	#FFFFFF	#000000	##000000
##66EC9B	1.00	1.50	14.04	14.04
#FFFFFF	1.50	1.00	21.00	21.00
#000000	14.04	21.00	1.00	1.00
##000000	14.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ECDB96

Deuteranopia (green-blind)

#D9CEA0

Tritanopia (blue-blind)

#3BE9D7

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66ec9b;
/* rgb */ color: rgb(102, 236, 155);
/* oklch */ color: oklch(84.8% 0.165 154.2);

Tailwind

colors: {
  custom: {
    50: '#9cf3b9',
    500: '#66ec9b',
    950: '#000000',
  },
}

SCSS

$custom: #66ec9b;
$custom-light: #9cf3b9;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec9b",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 155
  },
  "hsl": {
    "h": 143.731,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.84816,
    "c": 0.16453,
    "h": 154.2
  },
  "luminance": 0.65182
}

Semantic roles & 50–950 ramp

primary

#66EC9B

secondary

#BE3889

accent

#0B88DA

background

#FCFFFD

surface

#F6FEF8

border

#D0D6D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66EC9B

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

Preview Lab → · Contrast checker → · Palette generator →