#42B540#42B540

#42B540 is a light, vivid green. Relative luminance 0.346; OKLCH L 68.4% C 0.188 H 142.9°. Best body text is #000000 at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#42B540
RGB	rgb(66, 181, 64)
HSL	hsl(119, 48%, 48%)
HSV	hsv(119, 65%, 71%)
CMYK	cmyk(63.5%, 0%, 64.6%, 29%)
CIE-LAB	lab(65.42, -55.06, 48.70)
CIE-LCH	lch(65.42, 73.50, 138.50°)
OKLab	oklab(68.36% -0.1496 0.113)
OKLCH	oklch(68.36% 0.188 142.9)
XYZ	xyz(19.6949, 34.5742, 10.4851)
Luminance	0.3458 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42B540 #B340B5

analogous

#7DB540 #42B540 #40B578

triadic

#42B540 #4042B5 #B54042

tetradic

#42B540 #407DB5 #B340B5 #B57840

square

#42B540 #407DB5 #B340B5 #B57840

split-complementary

#42B540 #7840B5 #B5407D

monochromatic

#215B20 #328830 #42B540 #6ACA68 #97DA96

Accessibility & contrast

On white

2.65

#42B540 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.92

#42B540 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42B540

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42B540	#FFFFFF	#000000	##000000
##42B540	1.00	2.65	7.92	7.92
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.92	21.00	1.00	1.00
##000000	7.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A532

Deuteranopia (green-blind)

#AB9B4A

Tritanopia (blue-blind)

#2BB09D

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #42b540;
/* rgb */ color: rgb(66, 181, 64);
/* oklch */ color: oklch(68.4% 0.188 142.9);

Tailwind

colors: {
  custom: {
    50: '#84cc7a',
    500: '#42b540',
    950: '#000000',
  },
}

SCSS

$custom: #42b540;
$custom-light: #84cc7a;
$custom-dark: #000000;

JSON

{
  "hex": "#42b540",
  "rgb": {
    "r": 66,
    "g": 181,
    "b": 64
  },
  "hsl": {
    "h": 118.974,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.68357,
    "c": 0.18752,
    "h": 142.9
  },
  "luminance": 0.34576
}

Semantic roles & 50–950 ramp

primary

#42B540

secondary

#C48BC5

accent

#50D7D5

background

#F8FCF7

surface

#F0F9EE

border

#CBD2C9

text

#0C1309

muted

#7D827B

Preview Lab

Preview with #42B540

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

Preview Lab → · Contrast checker → · Palette generator →