#66CA3B#66CA3B

#66CA3B is a light, highly saturated green. Relative luminance 0.454; OKLCH L 75.0% C 0.201 H 138.0°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#66CA3B
RGB	rgb(102, 202, 59)
HSL	hsl(102, 57%, 51%)
HSV	hsv(102, 71%, 79%)
CMYK	cmyk(49.5%, 0%, 70.8%, 20.8%)
CIE-LAB	lab(73.14, -53.98, 59.28)
CIE-LCH	lch(73.14, 80.17, 132.32°)
OKLab	oklab(75.05% -0.1492 0.1344)
OKLCH	oklch(75.05% 0.201 138)
XYZ	xyz(27.3885, 45.3796, 11.4527)
Luminance	0.4538 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CA3B #9F3BCA

analogous

#ADCA3B #66CA3B #3BCA57

triadic

#66CA3B #3B66CA #CA3B66

tetradic

#66CA3B #3BADCA #9F3BCA #CA573B

square

#66CA3B #3BADCA #9F3BCA #CA573B

split-complementary

#66CA3B #573BCA #CA3BAD

monochromatic

#356D1E #4D9D2B #66CA3B #8CD76B #B1E49B

Accessibility & contrast

On white

2.08

#66CA3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#66CA3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA3B

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CA3B	#FFFFFF	#000000	##000000
##66CA3B	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B923

Deuteranopia (green-blind)

#C3B049

Tritanopia (blue-blind)

#5FC3AE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66ca3b;
/* rgb */ color: rgb(102, 202, 59);
/* oklch */ color: oklch(75.0% 0.201 138.0);

Tailwind

colors: {
  custom: {
    50: '#9adb79',
    500: '#66ca3b',
    950: '#000000',
  },
}

SCSS

$custom: #66ca3b;
$custom-light: #9adb79;
$custom-dark: #000000;

JSON

{
  "hex": "#66ca3b",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 59
  },
  "hsl": {
    "h": 101.958,
    "s": 57.43,
    "l": 51.176
  },
  "oklch": {
    "l": 0.75047,
    "c": 0.20076,
    "h": 138
  },
  "luminance": 0.45382
}

Semantic roles & 50–950 ramp

primary

#66CA3B

secondary

#BD91D0

accent

#47E1B3

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CA3B

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

Preview Lab → · Contrast checker → · Palette generator →