#40B581#40B581

#40B581 is a light, vivid teal. Relative luminance 0.357; OKLCH L 69.4% C 0.131 H 160.6°. Best body text is #000000 at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#40B581
RGB	rgb(64, 181, 129)
HSL	hsl(153, 48%, 48%)
HSV	hsv(153, 65%, 71%)
CMYK	cmyk(64.6%, 0%, 28.7%, 29%)
CIE-LAB	lab(66.31, -45.01, 17.09)
CIE-LCH	lch(66.31, 48.15, 159.21°)
OKLab	oklab(69.38% -0.1231 0.0435)
OKLCH	oklch(69.38% 0.131 160.6)
XYZ	xyz(22.5985, 35.7203, 26.4684)
Luminance	0.3572 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B581 #B54074

analogous

#40B546 #40B581 #40AEB5

triadic

#40B581 #8140B5 #B58140

tetradic

#40B581 #4640B5 #B54074 #AEB540

square

#40B581 #4640B5 #B54074 #AEB540

split-complementary

#40B581 #B540AE #B54640

monochromatic

#205B41 #308861 #40B581 #68CA9F #96DABB

Accessibility & contrast

On white

2.58

#40B581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.14

#40B581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B581

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B581	#FFFFFF	#000000	##000000
##40B581	1.00	2.58	8.14	8.14
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.14	21.00	1.00	1.00
##000000	8.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3A87E

Deuteranopia (green-blind)

#A39D84

Tritanopia (blue-blind)

#00B4A7

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #40b581;
/* rgb */ color: rgb(64, 181, 129);
/* oklch */ color: oklch(69.4% 0.131 160.6);

Tailwind

colors: {
  custom: {
    50: '#82cca5',
    500: '#40b581',
    950: '#000000',
  },
}

SCSS

$custom: #40b581;
$custom-light: #82cca5;
$custom-dark: #000000;

JSON

{
  "hex": "#40b581",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 129
  },
  "hsl": {
    "h": 153.333,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.69382,
    "c": 0.13055,
    "h": 160.6
  },
  "luminance": 0.35723
}

Semantic roles & 50–950 ramp

primary

#40B581

secondary

#C58BA5

accent

#508CD7

background

#F8FCFA

surface

#F0F9F4

border

#CBD2CE

text

#0B130F

muted

#7C827F

Preview Lab

Preview with #40B581

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

Preview Lab → · Contrast checker → · Palette generator →