#66E541#66E541

#66E541 is a light, highly saturated green. Relative luminance 0.592; OKLCH L 81.9% C 0.229 H 139.6°. Best body text is #000000 at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#66E541
RGB	rgb(102, 229, 65)
HSL	hsl(106, 76%, 58%)
HSV	hsv(106, 72%, 90%)
CMYK	cmyk(55.5%, 0%, 71.6%, 10.2%)
CIE-LAB	lab(81.42, -63.43, 65.56)
CIE-LCH	lch(81.42, 91.22, 134.05°)
OKLab	oklab(81.88% -0.1743 0.1483)
OKLCH	oklch(81.88% 0.229 139.6)
XYZ	xyz(34.4515, 59.2421, 14.6194)
Luminance	0.5925 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E541 #C041E5

analogous

#B8E541 #66E541 #41E56E

triadic

#66E541 #4166E5 #E54166

tetradic

#66E541 #41B8E5 #C041E5 #E56E41

square

#66E541 #41B8E5 #C041E5 #E56E41

split-complementary

#66E541 #6E41E5 #E541B8

monochromatic

#329715 #44CD1C #66E541 #91EC77 #BDF4AD

Accessibility & contrast

On white

1.63

#66E541 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.85

#66E541 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E541

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E541	#FFFFFF	#000000	##000000
##66E541	1.00	1.63	12.85	12.85
#FFFFFF	1.63	1.00	21.00	21.00
#000000	12.85	21.00	1.00	1.00
##000000	12.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EBD124

Deuteranopia (green-blind)

#DBC651

Tritanopia (blue-blind)

#58DDC5

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #66e541;
/* rgb */ color: rgb(102, 229, 65);
/* oklch */ color: oklch(81.9% 0.229 139.6);

Tailwind

colors: {
  custom: {
    50: '#9eee7f',
    500: '#66e541',
    950: '#000000',
  },
}

SCSS

$custom: #66e541;
$custom-light: #9eee7f;
$custom-dark: #000000;

JSON

{
  "hex": "#66e541",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 65
  },
  "hsl": {
    "h": 106.463,
    "s": 75.926,
    "l": 57.647
  },
  "oklch": {
    "l": 0.81883,
    "c": 0.22886,
    "h": 139.6
  },
  "luminance": 0.59245
}

Semantic roles & 50–950 ramp

primary

#66E541

secondary

#832F9B

accent

#35F3C8

background

#FCFFFB

surface

#F6FEF2

border

#D0D6CC

text

#10160B

muted

#80857E

Preview Lab

Preview with #66E541

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

Preview Lab → · Contrast checker → · Palette generator →