#40D581#40D581

#40D581 is a light, vivid green. Relative luminance 0.503; OKLCH L 77.5% C 0.173 H 154.0°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#40D581
RGB	rgb(64, 213, 129)
HSL	hsl(146, 64%, 54%)
HSV	hsv(146, 70%, 84%)
CMYK	cmyk(70%, 0%, 39.4%, 16.5%)
CIE-LAB	lab(76.23, -57.60, 30.50)
CIE-LCH	lch(76.23, 65.18, 152.10°)
OKLab	oklab(77.54% -0.1554 0.0759)
OKLCH	oklch(77.54% 0.173 154)
XYZ	xyz(29.8684, 50.2601, 28.8917)
Luminance	0.5026 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D581 #D54094

analogous

#4AD540 #40D581 #40D5CB

triadic

#40D581 #8140D5 #D58140

tetradic

#40D581 #404AD5 #D54094 #D5CB40

square

#40D581 #404AD5 #D54094 #D5CB40

split-complementary

#40D581 #CB40D5 #D5404A

monochromatic

#1C7F47 #27B163 #40D581 #72E0A2 #A4EBC3

Accessibility & contrast

On white

1.90

#40D581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#40D581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D581

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D581	#FFFFFF	#000000	##000000
##40D581	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D5C47B

Deuteranopia (green-blind)

#C2B787

Tritanopia (blue-blind)

#00D2C0

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #40d581;
/* rgb */ color: rgb(64, 213, 129);
/* oklch */ color: oklch(77.5% 0.173 154.0);

Tailwind

colors: {
  custom: {
    50: '#87e3a6',
    500: '#40d581',
    950: '#000000',
  },
}

SCSS

$custom: #40d581;
$custom-light: #87e3a6;
$custom-dark: #000000;

JSON

{
  "hex": "#40d581",
  "rgb": {
    "r": 64,
    "g": 213,
    "b": 129
  },
  "hsl": {
    "h": 146.174,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.7754,
    "c": 0.17301,
    "h": 154
  },
  "luminance": 0.50263
}

Semantic roles & 50–950 ramp

primary

#40D581

secondary

#863362

accent

#419EE7

background

#FCFEFC

surface

#F4FCF6

border

#CED5D0

text

#0D160F

muted

#7F8480

Preview Lab

Preview with #40D581

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

Preview Lab → · Contrast checker → · Palette generator →