#40B540#40B540

#40B540 is a light, vivid green. Relative luminance 0.345; OKLCH L 68.3% C 0.188 H 143.2°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#40B540
RGB	rgb(64, 181, 64)
HSL	hsl(120, 48%, 48%)
HSV	hsv(120, 65%, 71%)
CMYK	cmyk(64.6%, 0%, 64.6%, 29%)
CIE-LAB	lab(65.36, -55.49, 48.63)
CIE-LCH	lch(65.36, 73.78, 138.77°)
OKLab	oklab(68.3% -0.1507 0.1129)
OKLCH	oklch(68.3% 0.188 143.2)
XYZ	xyz(19.5625, 34.5059, 10.4789)
Luminance	0.3451 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B540 #B540B5

analogous

#7AB540 #40B540 #40B57A

triadic

#40B540 #4040B5 #B54040

tetradic

#40B540 #407AB5 #B540B5 #B57A40

square

#40B540 #407AB5 #B540B5 #B57A40

split-complementary

#40B540 #7A40B5 #B5407A

monochromatic

#205B20 #308830 #40B540 #68CA68 #96DA96

Accessibility & contrast

On white

2.66

#40B540 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#40B540 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B540

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B540	#FFFFFF	#000000	##000000
##40B540	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A532

Deuteranopia (green-blind)

#AB9B4A

Tritanopia (blue-blind)

#26B09D

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #40b540;
/* rgb */ color: rgb(64, 181, 64);
/* oklch */ color: oklch(68.3% 0.188 143.2);

Tailwind

colors: {
  custom: {
    50: '#83cc7a',
    500: '#40b540',
    950: '#000000',
  },
}

SCSS

$custom: #40b540;
$custom-light: #83cc7a;
$custom-dark: #000000;

JSON

{
  "hex": "#40b540",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 64
  },
  "hsl": {
    "h": 120,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.68297,
    "c": 0.18828,
    "h": 143.2
  },
  "luminance": 0.34508
}

Semantic roles & 50–950 ramp

primary

#40B540

secondary

#C58BC5

accent

#50D7D7

background

#F8FCF7

surface

#F0F9EE

border

#CBD2C9

text

#0C1309

muted

#7D827B

Preview Lab

Preview with #40B540

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

Preview Lab → · Contrast checker → · Palette generator →