#40E38F#40E38F

#40E38F is a light, vivid green. Relative luminance 0.580; OKLCH L 81.3% C 0.178 H 155.7°. Best body text is #000000 at 12.60:1 contrast (WCAG AA passes).

Color values

HEX	#40E38F
RGB	rgb(64, 227, 143)
HSL	hsl(149, 74%, 57%)
HSV	hsv(149, 72%, 89%)
CMYK	cmyk(71.8%, 0%, 37%, 11%)
CIE-LAB	lab(80.74, -60.20, 29.33)
CIE-LCH	lch(80.74, 66.96, 154.02°)
OKLab	oklab(81.34% -0.1626 0.0734)
OKLCH	oklch(81.34% 0.178 155.7)
XYZ	xyz(34.5381, 58.0073, 35.3576)
Luminance	0.5801 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40E38F #E34094

analogous

#43E340 #40E38F #40E3E1

triadic

#40E38F #8F40E3 #E38F40

tetradic

#40E38F #4043E3 #E34094 #E3E140

square

#40E38F #4043E3 #E34094 #E3E140

split-complementary

#40E38F #E140E3 #E34043

monochromatic

#169352 #1DC870 #40E38F #75EBAE #ABF3CE

Accessibility & contrast

On white

1.67

#40E38F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.60

#40E38F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40E38F

12.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40E38F	#FFFFFF	#000000	##000000
##40E38F	1.00	1.67	12.60	12.60
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.60	21.00	1.00	1.00
##000000	12.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E2D189

Deuteranopia (green-blind)

#CEC395

Tritanopia (blue-blind)

#00E1CE

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #40e38f;
/* rgb */ color: rgb(64, 227, 143);
/* oklch */ color: oklch(81.3% 0.178 155.7);

Tailwind

colors: {
  custom: {
    50: '#8aedb0',
    500: '#40e38f',
    950: '#000000',
  },
}

SCSS

$custom: #40e38f;
$custom-light: #8aedb0;
$custom-dark: #000000;

JSON

{
  "hex": "#40e38f",
  "rgb": {
    "r": 64,
    "g": 227,
    "b": 143
  },
  "hsl": {
    "h": 149.08,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.81336,
    "c": 0.17846,
    "h": 155.7
  },
  "luminance": 0.58011
}

Semantic roles & 50–950 ramp

primary

#40E38F

secondary

#973065

accent

#3797F1

background

#FCFFFD

surface

#F4FEF7

border

#CED6D0

text

#0D1610

muted

#7F8581

Preview Lab

Preview with #40E38F

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

Preview Lab → · Contrast checker → · Palette generator →