#66CA4E#66CA4E

#66CA4E is a light, vivid green. Relative luminance 0.456; OKLCH L 75.2% C 0.187 H 139.9°. Best body text is #000000 at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#66CA4E
RGB	rgb(102, 202, 78)
HSL	hsl(108, 54%, 55%)
HSV	hsv(108, 61%, 79%)
CMYK	cmyk(49.5%, 0%, 61.4%, 20.8%)
CIE-LAB	lab(73.29, -52.30, 51.74)
CIE-LCH	lch(73.29, 73.57, 135.31°)
OKLab	oklab(75.22% -0.1434 0.1207)
OKLCH	oklch(75.22% 0.187 139.9)
XYZ	xyz(27.9740, 45.6139, 14.5365)
Luminance	0.4562 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CA4E #B24ECA

analogous

#A4CA4E #66CA4E #4ECA74

triadic

#66CA4E #4E66CA #CA4E66

tetradic

#66CA4E #4EA4CA #B24ECA #CA744E

square

#66CA4E #4EA4CA #B24ECA #CA744E

split-complementary

#66CA4E #744ECA #CA4EA4

monochromatic

#357924 #49A832 #66CA4E #8FD87D #B7E6AC

Accessibility & contrast

On white

2.07

#66CA4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.12

#66CA4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA4E

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CA4E	#FFFFFF	#000000	##000000
##66CA4E	1.00	2.07	10.12	10.12
#FFFFFF	2.07	1.00	21.00	21.00
#000000	10.12	21.00	1.00	1.00
##000000	10.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFB940

Deuteranopia (green-blind)

#C2B158

Tritanopia (blue-blind)

#5CC4B0

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66ca4e;
/* rgb */ color: rgb(102, 202, 78);
/* oklch */ color: oklch(75.2% 0.187 139.9);

Tailwind

colors: {
  custom: {
    50: '#99db84',
    500: '#66ca4e',
    950: '#000000',
  },
}

SCSS

$custom: #66ca4e;
$custom-light: #99db84;
$custom-dark: #000000;

JSON

{
  "hex": "#66ca4e",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 78
  },
  "hsl": {
    "h": 108.387,
    "s": 53.913,
    "l": 54.902
  },
  "oklch": {
    "l": 0.75222,
    "c": 0.18741,
    "h": 139.9
  },
  "luminance": 0.45616
}

Semantic roles & 50–950 ramp

primary

#66CA4E

secondary

#CAA0D4

accent

#4BDDC1

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CA4E

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

Preview Lab → · Contrast checker → · Palette generator →