#66CD38#66CD38

#66CD38 is a light, highly saturated green. Relative luminance 0.468; OKLCH L 75.8% C 0.206 H 137.9°. Best body text is #000000 at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#66CD38
RGB	rgb(102, 205, 56)
HSL	hsl(101, 60%, 51%)
HSV	hsv(101, 73%, 80%)
CMYK	cmyk(50.2%, 0%, 72.7%, 19.6%)
CIE-LAB	lab(74.04, -55.33, 61.28)
CIE-LCH	lch(74.04, 82.56, 132.08°)
OKLab	oklab(75.78% -0.153 0.1382)
OKLCH	oklch(75.78% 0.206 137.9)
XYZ	xyz(28.0237, 46.7709, 11.2916)
Luminance	0.4677 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CD38 #9F38CD

analogous

#B0CD38 #66CD38 #38CD54

triadic

#66CD38 #3866CD #CD3866

tetradic

#66CD38 #38B0CD #9F38CD #CD5438

square

#66CD38 #38B0CD #9F38CD #CD5438

split-complementary

#66CD38 #5438CD #CD38B0

monochromatic

#356F1C #4DA028 #66CD38 #8CD969 #B1E69A

Accessibility & contrast

On white

2.03

#66CD38 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.35

#66CD38 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CD38

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CD38	#FFFFFF	#000000	##000000
##66CD38	1.00	2.03	10.35	10.35
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.35	21.00	1.00	1.00
##000000	10.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D3BB1C

Deuteranopia (green-blind)

#C6B347

Tritanopia (blue-blind)

#5EC6B0

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cd38;
/* rgb */ color: rgb(102, 205, 56);
/* oklch */ color: oklch(75.8% 0.206 137.9);

Tailwind

colors: {
  custom: {
    50: '#9bdd78',
    500: '#66cd38',
    950: '#000000',
  },
}

SCSS

$custom: #66cd38;
$custom-light: #9bdd78;
$custom-dark: #000000;

JSON

{
  "hex": "#66cd38",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 56
  },
  "hsl": {
    "h": 101.477,
    "s": 59.839,
    "l": 51.176
  },
  "oklch": {
    "l": 0.75782,
    "c": 0.20614,
    "h": 137.9
  },
  "luminance": 0.46773
}

Semantic roles & 50–950 ramp

primary

#66CD38

secondary

#BD8FD1

accent

#45E3B2

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CD38

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

Preview Lab → · Contrast checker → · Palette generator →