#40B978#40B978

#40B978 is a light, vivid green. Relative luminance 0.371; OKLCH L 70.2% C 0.144 H 155.9°. Best body text is #000000 at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#40B978
RGB	rgb(64, 185, 120)
HSL	hsl(148, 49%, 49%)
HSV	hsv(148, 65%, 73%)
CMYK	cmyk(65.4%, 0%, 35.1%, 27.5%)
CIE-LAB	lab(67.38, -48.50, 23.41)
CIE-LCH	lch(67.38, 53.86, 154.24°)
OKLab	oklab(70.21% -0.1315 0.0589)
OKLCH	oklch(70.21% 0.144 155.9)
XYZ	xyz(22.8514, 37.1416, 23.7304)
Luminance	0.3714 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B978 #B94081

analogous

#45B940 #40B978 #40B9B5

triadic

#40B978 #7840B9 #B97840

tetradic

#40B978 #4045B9 #B94081 #B9B540

square

#40B978 #4045B9 #B94081 #B9B540

split-complementary

#40B978 #B540B9 #B94045

monochromatic

#215E3D #308C5B #40B978 #6BCC97 #98DBB7

Accessibility & contrast

On white

2.49

#40B978 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.43

#40B978 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B978

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B978	#FFFFFF	#000000	##000000
##40B978	1.00	2.49	8.43	8.43
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.43	21.00	1.00	1.00
##000000	8.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8AB74

Deuteranopia (green-blind)

#A8A07C

Tritanopia (blue-blind)

#00B7A8

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #40b978;
/* rgb */ color: rgb(64, 185, 120);
/* oklch */ color: oklch(70.2% 0.144 155.9);

Tailwind

colors: {
  custom: {
    50: '#82cf9f',
    500: '#40b978',
    950: '#000000',
  },
}

SCSS

$custom: #40b978;
$custom-light: #82cf9f;
$custom-dark: #000000;

JSON

{
  "hex": "#40b978",
  "rgb": {
    "r": 64,
    "g": 185,
    "b": 120
  },
  "hsl": {
    "h": 147.769,
    "s": 48.594,
    "l": 48.824
  },
  "oklch": {
    "l": 0.70209,
    "c": 0.14408,
    "h": 155.9
  },
  "luminance": 0.37144
}

Semantic roles & 50–950 ramp

primary

#40B978

secondary

#C78EAD

accent

#5099D8

background

#F8FCF9

surface

#F0F9F2

border

#CBD2CC

text

#0C140E

muted

#7D827E

Preview Lab

Preview with #40B978

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

Preview Lab → · Contrast checker → · Palette generator →