#66C328#66C328

#66C328 is a light, highly saturated yellow-green. Relative luminance 0.420; OKLCH L 73.1% C 0.203 H 136.2°. Best body text is #000000 at 9.40:1 contrast (WCAG AA passes).

Color values

HEX	#66C328
RGB	rgb(102, 195, 40)
HSL	hsl(96, 66%, 46%)
HSV	hsv(96, 79%, 76%)
CMYK	cmyk(47.7%, 0%, 79.5%, 23.5%)
CIE-LAB	lab(70.88, -52.50, 63.39)
CIE-LCH	lch(70.88, 82.31, 129.63°)
OKLab	oklab(73.15% -0.1463 0.1403)
OKLCH	oklch(73.15% 0.203 136.2)
XYZ	xyz(25.3769, 42.0065, 8.7779)
Luminance	0.4201 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C328 #8528C3

analogous

#B3C328 #66C328 #28C337

triadic

#66C328 #2866C3 #C32866

tetradic

#66C328 #28B3C3 #8528C3 #C33728

square

#66C328 #28B3C3 #8528C3 #C33728

split-complementary

#66C328 #3728C3 #C328B3

monochromatic

#315D13 #4B901E #66C328 #86DB4E #A9E580

Accessibility & contrast

On white

2.23

#66C328 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.40

#66C328 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C328

9.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C328	#FFFFFF	#000000	##000000
##66C328	1.00	2.23	9.40	9.40
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.40	21.00	1.00	1.00
##000000	9.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAB200

Deuteranopia (green-blind)

#BEAB3A

Tritanopia (blue-blind)

#62BCA7

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66c328;
/* rgb */ color: rgb(102, 195, 40);
/* oklch */ color: oklch(73.1% 0.203 136.2);

Tailwind

colors: {
  custom: {
    50: '#9ad66f',
    500: '#66c328',
    950: '#000000',
  },
}

SCSS

$custom: #66c328;
$custom-light: #9ad66f;
$custom-dark: #000000;

JSON

{
  "hex": "#66c328",
  "rgb": {
    "r": 102,
    "g": 195,
    "b": 40
  },
  "hsl": {
    "h": 96,
    "s": 65.957,
    "l": 46.078
  },
  "oklch": {
    "l": 0.73149,
    "c": 0.20272,
    "h": 136.2
  },
  "luminance": 0.42008
}

Semantic roles & 50–950 ramp

primary

#66C328

secondary

#AC79CE

accent

#3FE9A5

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1408

muted

#7F837B

Preview Lab

Preview with #66C328

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

Preview Lab → · Contrast checker → · Palette generator →