#40E590#40E590

#40E590 is a light, vivid green. Relative luminance 0.591; OKLCH L 81.9% C 0.180 H 155.7°. Best body text is #000000 at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#40E590
RGB	rgb(64, 229, 144)
HSL	hsl(149, 76%, 57%)
HSV	hsv(149, 72%, 90%)
CMYK	cmyk(72.1%, 0%, 37.1%, 10.2%)
CIE-LAB	lab(81.37, -60.74, 29.65)
CIE-LCH	lch(81.37, 67.60, 153.98°)
OKLab	oklab(81.86% -0.1641 0.0742)
OKLCH	oklch(81.86% 0.18 155.7)
XYZ	xyz(35.1644, 59.1382, 35.9417)
Luminance	0.5914 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40E590 #E54095

analogous

#42E540 #40E590 #40E5E3

triadic

#40E590 #9040E5 #E59040

tetradic

#40E590 #4042E5 #E54095 #E5E340

square

#40E590 #4042E5 #E54095 #E5E340

split-complementary

#40E590 #E340E5 #E54042

monochromatic

#149653 #1CCC71 #40E590 #76ECAF #ACF4CF

Accessibility & contrast

On white

1.64

#40E590 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.83

#40E590 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40E590

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40E590	#FFFFFF	#000000	##000000
##40E590	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)

#E4D38A

Deuteranopia (green-blind)

#D0C496

Tritanopia (blue-blind)

#00E3CF

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #40e590;
/* rgb */ color: rgb(64, 229, 144);
/* oklch */ color: oklch(81.9% 0.180 155.7);

Tailwind

colors: {
  custom: {
    50: '#8aeeb1',
    500: '#40e590',
    950: '#000000',
  },
}

SCSS

$custom: #40e590;
$custom-light: #8aeeb1;
$custom-dark: #000000;

JSON

{
  "hex": "#40e590",
  "rgb": {
    "r": 64,
    "g": 229,
    "b": 144
  },
  "hsl": {
    "h": 149.091,
    "s": 76.037,
    "l": 57.451
  },
  "oklch": {
    "l": 0.81857,
    "c": 0.18011,
    "h": 155.7
  },
  "luminance": 0.59142
}

Semantic roles & 50–950 ramp

primary

#40E590

secondary

#9A2F66

accent

#3597F3

background

#FCFFFD

surface

#F4FEF7

border

#CED6D0

text

#0D1610

muted

#7F8581

Preview Lab

Preview with #40E590

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

Preview Lab → · Contrast checker → · Palette generator →