#40B837#40B837

#40B837 is a light, vivid green. Relative luminance 0.356; OKLCH L 69.0% C 0.198 H 142.1°. Best body text is #000000 at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#40B837
RGB	rgb(64, 184, 55)
HSL	hsl(116, 54%, 47%)
HSV	hsv(116, 70%, 72%)
CMYK	cmyk(65.2%, 0%, 70.1%, 27.8%)
CIE-LAB	lab(66.25, -57.40, 53.28)
CIE-LCH	lch(66.25, 78.32, 137.13°)
OKLab	oklab(69.01% -0.1563 0.1216)
OKLCH	oklch(69.01% 0.198 142.1)
XYZ	xyz(19.9433, 35.6448, 9.4428)
Luminance	0.3565 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B837 #AF37B8

analogous

#81B837 #40B837 #37B86F

triadic

#40B837 #3740B8 #B83740

tetradic

#40B837 #3781B8 #AF37B8 #B86F37

square

#40B837 #3781B8 #AF37B8 #B86F37

split-complementary

#40B837 #6F37B8 #B83781

monochromatic

#1F5A1B #308929 #40B837 #65CF5D #92DD8D

Accessibility & contrast

On white

2.58

#40B837 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.13

#40B837 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B837

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B837	#FFFFFF	#000000	##000000
##40B837	1.00	2.58	8.13	8.13
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.13	21.00	1.00	1.00
##000000	8.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCA723

Deuteranopia (green-blind)

#AE9D44

Tritanopia (blue-blind)

#28B29E

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #40b837;
/* rgb */ color: rgb(64, 184, 55);
/* oklch */ color: oklch(69.0% 0.198 142.1);

Tailwind

colors: {
  custom: {
    50: '#84ce75',
    500: '#40b837',
    950: '#000000',
  },
}

SCSS

$custom: #40b837;
$custom-light: #84ce75;
$custom-dark: #000000;

JSON

{
  "hex": "#40b837",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 55
  },
  "hsl": {
    "h": 115.814,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.69006,
    "c": 0.19809,
    "h": 142.1
  },
  "luminance": 0.35647
}

Semantic roles & 50–950 ramp

primary

#40B837

secondary

#C384C7

accent

#4ADDD3

background

#F8FCF7

surface

#F0F9ED

border

#CBD2C8

text

#0C1409

muted

#7D827B

Preview Lab

Preview with #40B837

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

Preview Lab → · Contrast checker → · Palette generator →