#66BC4E#66BC4E

#66BC4E is a light, vivid green. Relative luminance 0.393; OKLCH L 71.7% C 0.169 H 139.3°. Best body text is #000000 at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#66BC4E
RGB	rgb(102, 188, 78)
HSL	hsl(107, 45%, 52%)
HSV	hsv(107, 59%, 74%)
CMYK	cmyk(45.7%, 0%, 58.5%, 26.3%)
CIE-LAB	lab(69.00, -46.70, 46.84)
CIE-LCH	lch(69.00, 66.15, 134.92°)
OKLab	oklab(71.7% -0.1282 0.1102)
OKLCH	oklch(71.7% 0.169 139.3)
XYZ	xyz(24.8369, 39.3397, 13.4908)
Luminance	0.3934 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC4E #A44EBC

analogous

#9DBC4E #66BC4E #4EBC6D

triadic

#66BC4E #4E66BC #BC4E66

tetradic

#66BC4E #4E9DBC #A44EBC #BC6D4E

square

#66BC4E #4E9DBC #A44EBC #BC6D4E

split-complementary

#66BC4E #6D4EBC #BC4E9D

monochromatic

#366827 #4C9538 #66BC4E #8CCD7A #B3DEA7

Accessibility & contrast

On white

2.37

#66BC4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.87

#66BC4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC4E

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC4E	#FFFFFF	#000000	##000000
##66BC4E	1.00	2.37	8.87	8.87
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.87	21.00	1.00	1.00
##000000	8.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1AD43

Deuteranopia (green-blind)

#B5A656

Tritanopia (blue-blind)

#5FB6A4

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc4e;
/* rgb */ color: rgb(102, 188, 78);
/* oklch */ color: oklch(71.7% 0.169 139.3);

Tailwind

colors: {
  custom: {
    50: '#98d183',
    500: '#66bc4e',
    950: '#000000',
  },
}

SCSS

$custom: #66bc4e;
$custom-light: #98d183;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc4e",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 78
  },
  "hsl": {
    "h": 106.909,
    "s": 45.082,
    "l": 52.157
  },
  "oklch": {
    "l": 0.71696,
    "c": 0.16902,
    "h": 139.3
  },
  "luminance": 0.39341
}

Semantic roles & 50–950 ramp

primary

#66BC4E

secondary

#C09BCB

accent

#53D5B8

background

#F9FCF8

surface

#F2F9EF

border

#CCD2CA

text

#0E140B

muted

#7E827C

Preview Lab

Preview with #66BC4E

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

Preview Lab → · Contrast checker → · Palette generator →