#40B571#40B571

#40B571 is a light, vivid green. Relative luminance 0.353; OKLCH L 69.0% C 0.145 H 154.2°. Best body text is #000000 at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#40B571
RGB	rgb(64, 181, 113)
HSL	hsl(145, 48%, 48%)
HSV	hsv(145, 65%, 71%)
CMYK	cmyk(64.6%, 0%, 37.6%, 29%)
CIE-LAB	lab(66.00, -48.26, 25.28)
CIE-LCH	lch(66.00, 54.48, 152.35°)
OKLab	oklab(69.03% -0.1306 0.0632)
OKLCH	oklch(69.03% 0.145 154.2)
XYZ	xyz(21.6170, 35.3277, 21.2993)
Luminance	0.3533 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B571 #B54084

analogous

#4AB540 #40B571 #40B5AB

triadic

#40B571 #7140B5 #B57140

tetradic

#40B571 #404AB5 #B54084 #B5AB40

square

#40B571 #404AB5 #B54084 #B5AB40

split-complementary

#40B571 #AB40B5 #B5404A

monochromatic

#205B39 #308855 #40B571 #68CA91 #96DAB2

Accessibility & contrast

On white

2.60

#40B571 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.07

#40B571 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B571

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B571	#FFFFFF	#000000	##000000
##40B571	1.00	2.60	8.07	8.07
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.07	21.00	1.00	1.00
##000000	8.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5A76C

Deuteranopia (green-blind)

#A69C75

Tritanopia (blue-blind)

#00B3A4

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #40b571;
/* rgb */ color: rgb(64, 181, 113);
/* oklch */ color: oklch(69.0% 0.145 154.2);

Tailwind

colors: {
  custom: {
    50: '#82cc9a',
    500: '#40b571',
    950: '#000000',
  },
}

SCSS

$custom: #40b571;
$custom-light: #82cc9a;
$custom-dark: #000000;

JSON

{
  "hex": "#40b571",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 113
  },
  "hsl": {
    "h": 145.128,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.69034,
    "c": 0.14511,
    "h": 154.2
  },
  "luminance": 0.3533
}

Semantic roles & 50–950 ramp

primary

#40B571

secondary

#C58BAD

accent

#509FD7

background

#F8FCF9

surface

#F0F9F2

border

#CBD2CC

text

#0B130E

muted

#7C827E

Preview Lab

Preview with #40B571

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

Preview Lab → · Contrast checker → · Palette generator →