#42E440#42E440

#42E440 is a light, highly saturated green. Relative luminance 0.570; OKLCH L 80.6% C 0.241 H 142.8°. Best body text is #000000 at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#42E440
RGB	rgb(66, 228, 64)
HSL	hsl(119, 75%, 57%)
HSV	hsv(119, 72%, 89%)
CMYK	cmyk(71.1%, 0%, 71.9%, 10.6%)
CIE-LAB	lab(80.19, -70.74, 64.36)
CIE-LCH	lch(80.19, 95.64, 137.71°)
OKLab	oklab(80.59% -0.1921 0.1459)
OKLCH	oklch(80.59% 0.241 142.8)
XYZ	xyz(30.9137, 57.0118, 14.2247)
Luminance	0.5702 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42E440 #E240E4

analogous

#94E440 #42E440 #40E490

triadic

#42E440 #4042E4 #E44042

tetradic

#42E440 #4094E4 #E240E4 #E49040

square

#42E440 #4094E4 #E240E4 #E49040

split-complementary

#42E440 #9040E4 #E44094

monochromatic

#179515 #1FCA1D #42E440 #77EC76 #ACF3AB

Accessibility & contrast

On white

1.69

#42E440 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.40

#42E440 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42E440

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42E440	#FFFFFF	#000000	##000000
##42E440	1.00	1.69	12.40	12.40
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.40	21.00	1.00	1.00
##000000	12.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9CF22

Deuteranopia (green-blind)

#D7C251

Tritanopia (blue-blind)

#00DDC4

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #42e440;
/* rgb */ color: rgb(66, 228, 64);
/* oklch */ color: oklch(80.6% 0.241 142.8);

Tailwind

colors: {
  custom: {
    50: '#8dee7e',
    500: '#42e440',
    950: '#000000',
  },
}

SCSS

$custom: #42e440;
$custom-light: #8dee7e;
$custom-dark: #000000;

JSON

{
  "hex": "#42e440",
  "rgb": {
    "r": 66,
    "g": 228,
    "b": 64
  },
  "hsl": {
    "h": 119.268,
    "s": 75.229,
    "l": 57.255
  },
  "oklch": {
    "l": 0.80594,
    "c": 0.24126,
    "h": 142.8
  },
  "luminance": 0.57015
}

Semantic roles & 50–950 ramp

primary

#42E440

secondary

#982F99

accent

#36F2F0

background

#FCFFFB

surface

#F5FEF2

border

#CFD6CC

text

#0E160B

muted

#7F857E

Preview Lab

Preview with #42E440

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

Preview Lab → · Contrast checker → · Palette generator →