#66CD40#66CD40

#66CD40 is a light, highly saturated green. Relative luminance 0.469; OKLCH L 75.8% C 0.201 H 138.6°. Best body text is #000000 at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#66CD40
RGB	rgb(102, 205, 64)
HSL	hsl(104, 59%, 53%)
HSV	hsv(104, 69%, 80%)
CMYK	cmyk(50.2%, 0%, 68.8%, 19.6%)
CIE-LAB	lab(74.10, -54.73, 58.38)
CIE-LCH	lch(74.10, 80.02, 133.15°)
OKLab	oklab(75.84% -0.1509 0.1331)
OKLCH	oklch(75.84% 0.201 138.6)
XYZ	xyz(28.2352, 46.8555, 12.4057)
Luminance	0.4686 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CD40 #A740CD

analogous

#ACCD40 #66CD40 #40CD61

triadic

#66CD40 #4066CD #CD4066

tetradic

#66CD40 #40ACCD #A740CD #CD6140

square

#66CD40 #40ACCD #A740CD #CD6140

split-complementary

#66CD40 #6140CD #CD40AC

monochromatic

#36741E #4CA52B #66CD40 #8DDA71 #B4E6A1

Accessibility & contrast

On white

2.02

#66CD40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.37

#66CD40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CD40

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CD40	#FFFFFF	#000000	##000000
##66CD40	1.00	2.02	10.37	10.37
#FFFFFF	2.02	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)

#D3BC2B

Deuteranopia (green-blind)

#C6B34D

Tritanopia (blue-blind)

#5EC6B1

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cd40;
/* rgb */ color: rgb(102, 205, 64);
/* oklch */ color: oklch(75.8% 0.201 138.6);

Tailwind

colors: {
  custom: {
    50: '#9add7c',
    500: '#66cd40',
    950: '#000000',
  },
}

SCSS

$custom: #66cd40;
$custom-light: #9add7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66cd40",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 64
  },
  "hsl": {
    "h": 103.83,
    "s": 58.506,
    "l": 52.745
  },
  "oklch": {
    "l": 0.75844,
    "c": 0.2012,
    "h": 138.6
  },
  "luminance": 0.46858
}

Semantic roles & 50–950 ramp

primary

#66CD40

secondary

#C296D3

accent

#46E2B8

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CD40

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

Preview Lab → · Contrast checker → · Palette generator →