#40E591#40E591

#40E591 is a light, vivid green. Relative luminance 0.592; OKLCH L 81.9% C 0.179 H 155.9°. Best body text is #000000 at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#40E591
RGB	rgb(64, 229, 145)
HSL	hsl(149, 76%, 57%)
HSV	hsv(149, 72%, 90%)
CMYK	cmyk(72.1%, 0%, 36.7%, 10.2%)
CIE-LAB	lab(81.38, -60.56, 29.17)
CIE-LCH	lch(81.38, 67.21, 154.28°)
OKLab	oklab(81.88% -0.1637 0.0731)
OKLCH	oklch(81.88% 0.179 155.9)
XYZ	xyz(35.2411, 59.1689, 36.3460)
Luminance	0.5917 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40E591 #E54094

analogous

#41E540 #40E591 #40E5E4

triadic

#40E591 #9140E5 #E59140

tetradic

#40E591 #4041E5 #E54094 #E5E440

square

#40E591 #4041E5 #E54094 #E5E440

split-complementary

#40E591 #E440E5 #E54041

monochromatic

#149654 #1CCC72 #40E591 #76ECB0 #ACF4CF

Accessibility & contrast

On white

1.64

#40E591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.83

#40E591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40E591

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40E591	#FFFFFF	#000000	##000000
##40E591	1.00	1.64	12.83	12.83
#FFFFFF	1.64	1.00	21.00	21.00
#000000	12.83	21.00	1.00	1.00
##000000	12.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4D38B

Deuteranopia (green-blind)

#D0C497

Tritanopia (blue-blind)

#00E3D0

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #40e591;
/* rgb */ color: rgb(64, 229, 145);
/* oklch */ color: oklch(81.9% 0.179 155.9);

Tailwind

colors: {
  custom: {
    50: '#8aeeb2',
    500: '#40e591',
    950: '#000000',
  },
}

SCSS

$custom: #40e591;
$custom-light: #8aeeb2;
$custom-dark: #000000;

JSON

{
  "hex": "#40e591",
  "rgb": {
    "r": 64,
    "g": 229,
    "b": 145
  },
  "hsl": {
    "h": 149.455,
    "s": 76.037,
    "l": 57.451
  },
  "oklch": {
    "l": 0.81876,
    "c": 0.17923,
    "h": 155.9
  },
  "luminance": 0.59173
}

Semantic roles & 50–950 ramp

primary

#40E591

secondary

#9A2F66

accent

#3596F3

background

#FCFFFD

surface

#F4FEF7

border

#CED6D0

text

#0D1611

muted

#7F8581

Preview Lab

Preview with #40E591

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

Preview Lab → · Contrast checker → · Palette generator →