#66CA4A#66CA4A

#66CA4A is a light, vivid green. Relative luminance 0.456; OKLCH L 75.2% C 0.190 H 139.4°. Best body text is #000000 at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#66CA4A
RGB	rgb(102, 202, 74)
HSL	hsl(107, 55%, 54%)
HSV	hsv(107, 63%, 79%)
CMYK	cmyk(49.5%, 0%, 63.4%, 20.8%)
CIE-LAB	lab(73.26, -52.69, 53.42)
CIE-LCH	lch(73.26, 75.04, 134.61°)
OKLab	oklab(75.18% -0.1447 0.1238)
OKLCH	oklch(75.18% 0.19 139.4)
XYZ	xyz(27.8350, 45.5582, 13.8041)
Luminance	0.4556 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CA4A #AE4ACA

analogous

#A6CA4A #66CA4A #4ACA6E

triadic

#66CA4A #4A66CA #CA4A66

tetradic

#66CA4A #4AA6CA #AE4ACA #CA6E4A

square

#66CA4A #4AA6CA #AE4ACA #CA6E4A

split-complementary

#66CA4A #6E4ACA #CA4AA6

monochromatic

#357723 #4AA631 #66CA4A #8ED879 #B6E6A9

Accessibility & contrast

On white

2.08

#66CA4A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.11

#66CA4A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA4A

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CA4A	#FFFFFF	#000000	##000000
##66CA4A	1.00	2.08	10.11	10.11
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.11	21.00	1.00	1.00
##000000	10.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B93B

Deuteranopia (green-blind)

#C2B155

Tritanopia (blue-blind)

#5DC4AF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66ca4a;
/* rgb */ color: rgb(102, 202, 74);
/* oklch */ color: oklch(75.2% 0.190 139.4);

Tailwind

colors: {
  custom: {
    50: '#9adb82',
    500: '#66ca4a',
    950: '#000000',
  },
}

SCSS

$custom: #66ca4a;
$custom-light: #9adb82;
$custom-dark: #000000;

JSON

{
  "hex": "#66ca4a",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 74
  },
  "hsl": {
    "h": 106.875,
    "s": 54.701,
    "l": 54.118
  },
  "oklch": {
    "l": 0.7518,
    "c": 0.19047,
    "h": 139.4
  },
  "luminance": 0.4556
}

Semantic roles & 50–950 ramp

primary

#66CA4A

secondary

#C79DD3

accent

#4ADEBE

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CA4A

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

Preview Lab → · Contrast checker → · Palette generator →