#66CA40#66CA40

#66CA40 is a light, vivid green. Relative luminance 0.454; OKLCH L 75.1% C 0.198 H 138.4°. Best body text is #000000 at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#66CA40
RGB	rgb(102, 202, 64)
HSL	hsl(103, 57%, 52%)
HSV	hsv(103, 68%, 79%)
CMYK	cmyk(49.5%, 0%, 68.3%, 20.8%)
CIE-LAB	lab(73.18, -53.58, 57.42)
CIE-LCH	lch(73.18, 78.54, 133.02°)
OKLab	oklab(75.09% -0.1478 0.1311)
OKLCH	oklch(75.09% 0.198 138.4)
XYZ	xyz(27.5245, 45.4340, 12.1687)
Luminance	0.4544 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CA40 #A440CA

analogous

#ABCA40 #66CA40 #40CA5F

triadic

#66CA40 #4066CA #CA4066

tetradic

#66CA40 #40ABCA #A440CA #CA5F40

square

#66CA40 #40ABCA #A440CA #CA5F40

split-complementary

#66CA40 #5F40CA #CA40AB

monochromatic

#36701F #4CA02C #66CA40 #8CD770 #B3E5A0

Accessibility & contrast

On white

2.08

#66CA40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.09

#66CA40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA40

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CA40	#FFFFFF	#000000	##000000
##66CA40	1.00	2.08	10.09	10.09
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.09	21.00	1.00	1.00
##000000	10.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B92C

Deuteranopia (green-blind)

#C3B04D

Tritanopia (blue-blind)

#5EC3AE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66ca40;
/* rgb */ color: rgb(102, 202, 64);
/* oklch */ color: oklch(75.1% 0.198 138.4);

Tailwind

colors: {
  custom: {
    50: '#9adb7c',
    500: '#66ca40',
    950: '#000000',
  },
}

SCSS

$custom: #66ca40;
$custom-light: #9adb7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66ca40",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 64
  },
  "hsl": {
    "h": 103.478,
    "s": 56.557,
    "l": 52.157
  },
  "oklch": {
    "l": 0.75087,
    "c": 0.19754,
    "h": 138.4
  },
  "luminance": 0.45436
}

Semantic roles & 50–950 ramp

primary

#66CA40

secondary

#C095D1

accent

#48E0B6

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CA40

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

Preview Lab → · Contrast checker → · Palette generator →