#40B166#40B166

#40B166 is a light, vivid green. Relative luminance 0.335; OKLCH L 67.8% C 0.150 H 151.2°. Best body text is #000000 at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#40B166
RGB	rgb(64, 177, 102)
HSL	hsl(140, 47%, 47%)
HSV	hsv(140, 64%, 69%)
CMYK	cmyk(63.8%, 0%, 42.4%, 30.6%)
CIE-LAB	lab(64.56, -48.68, 29.19)
CIE-LCH	lch(64.56, 56.76, 149.05°)
OKLab	oklab(67.79% -0.1315 0.0722)
OKLCH	oklch(67.79% 0.15 151.2)
XYZ	xyz(20.2332, 33.4915, 17.9660)
Luminance	0.3349 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B166 #B1408B

analogous

#53B140 #40B166 #40B19F

triadic

#40B166 #6640B1 #B16640

tetradic

#40B166 #4053B1 #B1408B #B19F40

square

#40B166 #4053B1 #B1408B #B19F40

split-complementary

#40B166 #9F40B1 #B14053

monochromatic

#1F5732 #30844C #40B166 #66C887 #93D8AA

Accessibility & contrast

On white

2.73

#40B166 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.70

#40B166 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B166

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B166	#FFFFFF	#000000	##000000
##40B166	1.00	2.73	7.70	7.70
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.70	21.00	1.00	1.00
##000000	7.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2A361

Deuteranopia (green-blind)

#A3996B

Tritanopia (blue-blind)

#14AE9F

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #40b166;
/* rgb */ color: rgb(64, 177, 102);
/* oklch */ color: oklch(67.8% 0.150 151.2);

Tailwind

colors: {
  custom: {
    50: '#81c992',
    500: '#40b166',
    950: '#000000',
  },
}

SCSS

$custom: #40b166;
$custom-light: #81c992;
$custom-dark: #000000;

JSON

{
  "hex": "#40b166",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 102
  },
  "hsl": {
    "h": 140.177,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.67785,
    "c": 0.15,
    "h": 151.2
  },
  "luminance": 0.33494
}

Semantic roles & 50–950 ramp

primary

#40B166

secondary

#C389B0

accent

#51AAD7

background

#F8FCF9

surface

#F0F8F1

border

#CBD1CB

text

#0B130D

muted

#7C827E

Preview Lab

Preview with #40B166

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

Preview Lab → · Contrast checker → · Palette generator →