#66CD3F#66CD3F

#66CD3F is a light, highly saturated green. Relative luminance 0.468; OKLCH L 75.8% C 0.202 H 138.5°. Best body text is #000000 at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#66CD3F
RGB	rgb(102, 205, 63)
HSL	hsl(104, 59%, 53%)
HSV	hsv(104, 69%, 80%)
CMYK	cmyk(50.2%, 0%, 69.3%, 19.6%)
CIE-LAB	lab(74.09, -54.81, 58.76)
CIE-LCH	lch(74.09, 80.35, 133.01°)
OKLab	oklab(75.84% -0.1511 0.1338)
OKLCH	oklch(75.84% 0.202 138.5)
XYZ	xyz(28.2070, 46.8442, 12.2571)
Luminance	0.4685 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CD3F #A63FCD

analogous

#ADCD3F #66CD3F #3FCD5F

triadic

#66CD3F #3F66CD #CD3F66

tetradic

#66CD3F #3FADCD #A63FCD #CD5F3F

square

#66CD3F #3FADCD #A63FCD #CD5F3F

split-complementary

#66CD3F #5F3FCD #CD3FAD

monochromatic

#36741E #4CA42B #66CD3F #8DDA70 #B3E6A0

Accessibility & contrast

On white

2.03

#66CD3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.37

#66CD3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CD3F

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CD3F	#FFFFFF	#000000	##000000
##66CD3F	1.00	2.03	10.37	10.37
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.37	21.00	1.00	1.00
##000000	10.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BC29

Deuteranopia (green-blind)

#C6B34C

Tritanopia (blue-blind)

#5EC6B1

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cd3f;
/* rgb */ color: rgb(102, 205, 63);
/* oklch */ color: oklch(75.8% 0.202 138.5);

Tailwind

colors: {
  custom: {
    50: '#9add7c',
    500: '#66cd3f',
    950: '#000000',
  },
}

SCSS

$custom: #66cd3f;
$custom-light: #9add7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66cd3f",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 63
  },
  "hsl": {
    "h": 103.521,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.75836,
    "c": 0.20186,
    "h": 138.5
  },
  "luminance": 0.46846
}

Semantic roles & 50–950 ramp

primary

#66CD3F

secondary

#C295D3

accent

#46E2B7

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CD3F

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

Preview Lab → · Contrast checker → · Palette generator →