#40B370#40B370

#40B370 is a light, vivid green. Relative luminance 0.345; OKLCH L 68.5% C 0.143 H 154.2°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#40B370
RGB	rgb(64, 179, 112)
HSL	hsl(145, 47%, 48%)
HSV	hsv(145, 64%, 70%)
CMYK	cmyk(64.2%, 0%, 37.4%, 29.8%)
CIE-LAB	lab(65.36, -47.65, 24.95)
CIE-LCH	lch(65.36, 53.79, 152.36°)
OKLab	oklab(68.5% -0.129 0.0624)
OKLCH	oklch(68.5% 0.143 154.2)
XYZ	xyz(21.1573, 34.4979, 20.8698)
Luminance	0.3450 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B370 #B34083

analogous

#4AB340 #40B370 #40B3A9

triadic

#40B370 #7040B3 #B37040

tetradic

#40B370 #404AB3 #B34083 #B3A940

square

#40B370 #404AB3 #B34083 #B3A940

split-complementary

#40B370 #A940B3 #B3404A

monochromatic

#205938 #308654 #40B370 #67C990 #94D9B1

Accessibility & contrast

On white

2.66

#40B370 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#40B370 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B370

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B370	#FFFFFF	#000000	##000000
##40B370	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3A56C

Deuteranopia (green-blind)

#A49A74

Tritanopia (blue-blind)

#03B1A2

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #40b370;
/* rgb */ color: rgb(64, 179, 112);
/* oklch */ color: oklch(68.5% 0.143 154.2);

Tailwind

colors: {
  custom: {
    50: '#81cb99',
    500: '#40b370',
    950: '#000000',
  },
}

SCSS

$custom: #40b370;
$custom-light: #81cb99;
$custom-dark: #000000;

JSON

{
  "hex": "#40b370",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 112
  },
  "hsl": {
    "h": 145.043,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.68497,
    "c": 0.1433,
    "h": 154.2
  },
  "luminance": 0.345
}

Semantic roles & 50–950 ramp

primary

#40B370

secondary

#C48AAC

accent

#519FD7

background

#F8FCF9

surface

#F0F8F2

border

#CBD1CC

text

#0B130E

muted

#7C827E

Preview Lab

Preview with #40B370

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

Preview Lab → · Contrast checker → · Palette generator →