#66CA2D#66CA2D

#66CA2D is a light, highly saturated yellow-green. Relative luminance 0.453; OKLCH L 75.0% C 0.208 H 137.0°. Best body text is #000000 at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#66CA2D
RGB	rgb(102, 202, 45)
HSL	hsl(98, 64%, 48%)
HSV	hsv(98, 78%, 79%)
CMYK	cmyk(49.5%, 0%, 77.7%, 20.8%)
CIE-LAB	lab(73.06, -54.89, 63.95)
CIE-LCH	lch(73.06, 84.28, 130.64°)
OKLab	oklab(74.95% -0.1525 0.1422)
OKLCH	oklch(74.95% 0.208 137)
XYZ	xyz(27.0728, 45.2534, 9.7903)
Luminance	0.4526 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CA2D #912DCA

analogous

#B4CA2D #66CA2D #2DCA43

triadic

#66CA2D #2D66CA #CA2D66

tetradic

#66CA2D #2DB4CA #912DCA #CA432D

square

#66CA2D #2DB4CA #912DCA #CA432D

split-complementary

#66CA2D #432DCA #CA2DB4

monochromatic

#336617 #4D9822 #66CA2D #89DA5A #ACE58C

Accessibility & contrast

On white

2.09

#66CA2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.05

#66CA2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA2D

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CA2D	#FFFFFF	#000000	##000000
##66CA2D	1.00	2.09	10.05	10.05
#FFFFFF	2.09	1.00	21.00	21.00
#000000	10.05	21.00	1.00	1.00
##000000	10.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1B800

Deuteranopia (green-blind)

#C4B03F

Tritanopia (blue-blind)

#60C3AD

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66ca2d;
/* rgb */ color: rgb(102, 202, 45);
/* oklch */ color: oklch(75.0% 0.208 137.0);

Tailwind

colors: {
  custom: {
    50: '#9bdb72',
    500: '#66ca2d',
    950: '#000000',
  },
}

SCSS

$custom: #66ca2d;
$custom-light: #9bdb72;
$custom-dark: #000000;

JSON

{
  "hex": "#66ca2d",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 45
  },
  "hsl": {
    "h": 98.217,
    "s": 63.563,
    "l": 48.431
  },
  "oklch": {
    "l": 0.74952,
    "c": 0.20849,
    "h": 137
  },
  "luminance": 0.45255
}

Semantic roles & 50–950 ramp

primary

#66CA2D

secondary

#B483CF

accent

#41E7AB

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CA2D

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

Preview Lab → · Contrast checker → · Palette generator →