#40B538#40B538

#40B538 is a light, vivid green. Relative luminance 0.344; OKLCH L 68.2% C 0.194 H 142.2°. Best body text is #000000 at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#40B538
RGB	rgb(64, 181, 56)
HSL	hsl(116, 53%, 46%)
HSV	hsv(116, 69%, 71%)
CMYK	cmyk(64.6%, 0%, 69.1%, 29%)
CIE-LAB	lab(65.30, -56.27, 51.88)
CIE-LCH	lch(65.30, 76.54, 137.32°)
OKLab	oklab(68.22% -0.1532 0.1188)
OKLCH	oklch(68.22% 0.194 142.2)
XYZ	xyz(19.3510, 34.4213, 9.3648)
Luminance	0.3442 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B538 #AD38B5

analogous

#7FB538 #40B538 #38B56F

triadic

#40B538 #3840B5 #B53840

tetradic

#40B538 #387FB5 #AD38B5 #B56F38

square

#40B538 #387FB5 #AD38B5 #B56F38

split-complementary

#40B538 #6F38B5 #B5387F

monochromatic

#1F581B #2F862A #40B538 #64CD5D #91DB8C

Accessibility & contrast

On white

2.66

#40B538 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.88

#40B538 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B538

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B538	#FFFFFF	#000000	##000000
##40B538	1.00	2.66	7.88	7.88
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.88	21.00	1.00	1.00
##000000	7.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A426

Deuteranopia (green-blind)

#AB9B44

Tritanopia (blue-blind)

#29B09C

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #40b538;
/* rgb */ color: rgb(64, 181, 56);
/* oklch */ color: oklch(68.2% 0.194 142.2);

Tailwind

colors: {
  custom: {
    50: '#83cc75',
    500: '#40b538',
    950: '#000000',
  },
}

SCSS

$custom: #40b538;
$custom-light: #83cc75;
$custom-dark: #000000;

JSON

{
  "hex": "#40b538",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 56
  },
  "hsl": {
    "h": 116.16,
    "s": 52.743,
    "l": 46.471
  },
  "oklch": {
    "l": 0.68221,
    "c": 0.19391,
    "h": 142.2
  },
  "luminance": 0.34423
}

Semantic roles & 50–950 ramp

primary

#40B538

secondary

#C283C6

accent

#4CDCD3

background

#F8FCF7

surface

#F0F9ED

border

#CBD2C8

text

#0C1309

muted

#7D827B

Preview Lab

Preview with #40B538

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

Preview Lab → · Contrast checker → · Palette generator →