#66C838#66C838

#66C838 is a light, highly saturated green. Relative luminance 0.444; OKLCH L 74.5% C 0.200 H 137.6°. Best body text is #000000 at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#66C838
RGB	rgb(102, 200, 56)
HSL	hsl(101, 57%, 50%)
HSV	hsv(101, 72%, 78%)
CMYK	cmyk(49%, 0%, 72%, 21.6%)
CIE-LAB	lab(72.51, -53.43, 59.73)
CIE-LCH	lch(72.51, 80.14, 131.81°)
OKLab	oklab(74.52% -0.1479 0.1349)
OKLCH	oklch(74.52% 0.2 137.6)
XYZ	xyz(26.8467, 44.4170, 10.8993)
Luminance	0.4442 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C838 #9A38C8

analogous

#AEC838 #66C838 #38C852

triadic

#66C838 #3866C8 #C83866

tetradic

#66C838 #38AEC8 #9A38C8 #C85238

square

#66C838 #38AEC8 #9A38C8 #C85238

split-complementary

#66C838 #5238C8 #C838AE

monochromatic

#35691D #4D992A #66C838 #8BD568 #B0E398

Accessibility & contrast

On white

2.12

#66C838 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.88

#66C838 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C838

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C838	#FFFFFF	#000000	##000000
##66C838	1.00	2.12	9.88	9.88
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.88	21.00	1.00	1.00
##000000	9.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB71E

Deuteranopia (green-blind)

#C2AF46

Tritanopia (blue-blind)

#5FC1AC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66c838;
/* rgb */ color: rgb(102, 200, 56);
/* oklch */ color: oklch(74.5% 0.200 137.6);

Tailwind

colors: {
  custom: {
    50: '#9ad977',
    500: '#66c838',
    950: '#000000',
  },
}

SCSS

$custom: #66c838;
$custom-light: #9ad977;
$custom-dark: #000000;

JSON

{
  "hex": "#66c838",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 56
  },
  "hsl": {
    "h": 100.833,
    "s": 56.693,
    "l": 50.196
  },
  "oklch": {
    "l": 0.74518,
    "c": 0.20017,
    "h": 137.6
  },
  "luminance": 0.44419
}

Semantic roles & 50–950 ramp

primary

#66C838

secondary

#BA8ECE

accent

#48E0AF

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66C838

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

Preview Lab → · Contrast checker → · Palette generator →