#66D940#66D940

#66D940 is a light, highly saturated green. Relative luminance 0.528; OKLCH L 78.9% C 0.216 H 139.1°. Best body text is #000000 at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#66D940
RGB	rgb(102, 217, 64)
HSL	hsl(105, 67%, 55%)
HSV	hsv(105, 71%, 85%)
CMYK	cmyk(53%, 0%, 70.5%, 14.9%)
CIE-LAB	lab(77.77, -59.20, 62.19)
CIE-LCH	lch(77.77, 85.86, 133.59°)
OKLab	oklab(78.87% -0.163 0.1411)
OKLCH	oklch(78.87% 0.216 139.1)
XYZ	xyz(31.2165, 52.8182, 13.3994)
Luminance	0.5282 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D940 #B340D9

analogous

#B2D940 #66D940 #40D966

triadic

#66D940 #4066D9 #D94066

tetradic

#66D940 #40B2D9 #B340D9 #D96640

square

#66D940 #40B2D9 #B340D9 #D96640

split-complementary

#66D940 #6640D9 #D940B2

monochromatic

#35841A #49B724 #66D940 #8FE373 #B8EDA6

Accessibility & contrast

On white

1.82

#66D940 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.56

#66D940 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D940

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D940	#FFFFFF	#000000	##000000
##66D940	1.00	1.82	11.56	11.56
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.56	21.00	1.00	1.00
##000000	11.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DFC627

Deuteranopia (green-blind)

#D1BD4F

Tritanopia (blue-blind)

#5BD2BB

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66d940;
/* rgb */ color: rgb(102, 217, 64);
/* oklch */ color: oklch(78.9% 0.216 139.1);

Tailwind

colors: {
  custom: {
    50: '#9ce67d',
    500: '#66d940',
    950: '#000000',
  },
}

SCSS

$custom: #66d940;
$custom-light: #9ce67d;
$custom-dark: #000000;

JSON

{
  "hex": "#66d940",
  "rgb": {
    "r": 102,
    "g": 217,
    "b": 64
  },
  "hsl": {
    "h": 105.098,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.78866,
    "c": 0.21554,
    "h": 139.1
  },
  "luminance": 0.52821
}

Semantic roles & 50–950 ramp

primary

#66D940

secondary

#75328B

accent

#3EEABF

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F160A

muted

#80847D

Preview Lab

Preview with #66D940

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

Preview Lab → · Contrast checker → · Palette generator →