#42B128#42B128

#42B128 is a light, vivid green. Relative luminance 0.328; OKLCH L 67.1% C 0.198 H 140.4°. Best body text is #000000 at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#42B128
RGB	rgb(66, 177, 40)
HSL	hsl(109, 63%, 43%)
HSV	hsv(109, 77%, 69%)
CMYK	cmyk(62.7%, 0%, 77.4%, 30.6%)
CIE-LAB	lab(63.96, -55.67, 56.39)
CIE-LCH	lch(63.96, 79.24, 134.64°)
OKLab	oklab(67.1% -0.1526 0.1261)
OKLCH	oklch(67.1% 0.198 140.4)
XYZ	xyz(18.3510, 32.7540, 7.3621)
Luminance	0.3276 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B128 #9728B1

analogous

#87B128 #42B128 #28B152

triadic

#42B128 #2842B1 #B12842

tetradic

#42B128 #2887B1 #9728B1 #B15228

square

#42B128 #2887B1 #9728B1 #B15228

split-complementary

#42B128 #5228B1 #B12887

monochromatic

#1D4D11 #2F7F1D #42B128 #5ED442 #88E074

Accessibility & contrast

On white

2.78

#42B128 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.55

#42B128 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B128

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B128	#FFFFFF	#000000	##000000
##42B128	1.00	2.78	7.55	7.55
#FFFFFF	2.78	1.00	21.00	21.00
#000000	7.55	21.00	1.00	1.00
##000000	7.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6A103

Deuteranopia (green-blind)

#A89837

Tritanopia (blue-blind)

#31AB97

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #42b128;
/* rgb */ color: rgb(66, 177, 40);
/* oklch */ color: oklch(67.1% 0.198 140.4);

Tailwind

colors: {
  custom: {
    50: '#84c96c',
    500: '#42b128',
    950: '#000000',
  },
}

SCSS

$custom: #42b128;
$custom-light: #84c96c;
$custom-dark: #000000;

JSON

{
  "hex": "#42b128",
  "rgb": {
    "r": 66,
    "g": 177,
    "b": 40
  },
  "hsl": {
    "h": 108.613,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.67098,
    "c": 0.19796,
    "h": 140.4
  },
  "luminance": 0.32756
}

Semantic roles & 50–950 ramp

primary

#42B128

secondary

#B66EC7

accent

#42E6C7

background

#F8FCF6

surface

#F0F8EC

border

#CBD1C7

text

#0C1307

muted

#7D827A

Preview Lab

Preview with #42B128

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

Preview Lab → · Contrast checker → · Palette generator →