#40E440#40E440

#40E440 is a light, highly saturated green. Relative luminance 0.569; OKLCH L 80.6% C 0.242 H 142.9°. Best body text is #000000 at 12.39:1 contrast (WCAG AA passes).

Color values

HEX	#40E440
RGB	rgb(64, 228, 64)
HSL	hsl(120, 75%, 57%)
HSV	hsv(120, 72%, 89%)
CMYK	cmyk(71.9%, 0%, 71.9%, 10.6%)
CIE-LAB	lab(80.15, -71.07, 64.30)
CIE-LCH	lch(80.15, 95.84, 137.86°)
OKLab	oklab(80.55% -0.1929 0.1458)
OKLCH	oklch(80.55% 0.242 142.9)
XYZ	xyz(30.7813, 56.9435, 14.2185)
Luminance	0.5695 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40E440 #E440E4

analogous

#92E440 #40E440 #40E492

triadic

#40E440 #4040E4 #E44040

tetradic

#40E440 #4092E4 #E440E4 #E49240

square

#40E440 #4092E4 #E440E4 #E49240

split-complementary

#40E440 #9240E4 #E44092

monochromatic

#159515 #1DCA1D #40E440 #76EC76 #ABF3AB

Accessibility & contrast

On white

1.69

#40E440 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.39

#40E440 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40E440

12.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40E440	#FFFFFF	#000000	##000000
##40E440	1.00	1.69	12.39	12.39
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.39	21.00	1.00	1.00
##000000	12.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9CF23

Deuteranopia (green-blind)

#D6C251

Tritanopia (blue-blind)

#00DDC4

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #40e440;
/* rgb */ color: rgb(64, 228, 64);
/* oklch */ color: oklch(80.6% 0.242 142.9);

Tailwind

colors: {
  custom: {
    50: '#8dee7e',
    500: '#40e440',
    950: '#000000',
  },
}

SCSS

$custom: #40e440;
$custom-light: #8dee7e;
$custom-dark: #000000;

JSON

{
  "hex": "#40e440",
  "rgb": {
    "r": 64,
    "g": 228,
    "b": 64
  },
  "hsl": {
    "h": 120,
    "s": 75.229,
    "l": 57.255
  },
  "oklch": {
    "l": 0.80551,
    "c": 0.24184,
    "h": 142.9
  },
  "luminance": 0.56947
}

Semantic roles & 50–950 ramp

primary

#40E440

secondary

#992F99

accent

#36F2F2

background

#FCFFFB

surface

#F5FEF2

border

#CFD6CC

text

#0E170B

muted

#7F857E

Preview Lab

Preview with #40E440

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

Preview Lab → · Contrast checker → · Palette generator →