#40B579#40B579

#40B579 is a light, vivid green. Relative luminance 0.355; OKLCH L 69.2% C 0.138 H 157.1°. Best body text is #000000 at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#40B579
RGB	rgb(64, 181, 121)
HSL	hsl(149, 48%, 48%)
HSV	hsv(149, 65%, 71%)
CMYK	cmyk(64.6%, 0%, 33.1%, 29%)
CIE-LAB	lab(66.15, -46.69, 21.20)
CIE-LCH	lch(66.15, 51.27, 155.58°)
OKLab	oklab(69.2% -0.1269 0.0535)
OKLCH	oklch(69.2% 0.138 157.1)
XYZ	xyz(22.0874, 35.5159, 23.7767)
Luminance	0.3552 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B579 #B5407C

analogous

#41B540 #40B579 #40B5B3

triadic

#40B579 #7940B5 #B57940

tetradic

#40B579 #4041B5 #B5407C #B5B340

square

#40B579 #4041B5 #B5407C #B5B340

split-complementary

#40B579 #B340B5 #B54041

monochromatic

#205B3D #30885B #40B579 #68CA98 #96DAB7

Accessibility & contrast

On white

2.59

#40B579 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.10

#40B579 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B579

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B579	#FFFFFF	#000000	##000000
##40B579	1.00	2.59	8.10	8.10
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.10	21.00	1.00	1.00
##000000	8.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4A775

Deuteranopia (green-blind)

#A49C7D

Tritanopia (blue-blind)

#00B4A5

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #40b579;
/* rgb */ color: rgb(64, 181, 121);
/* oklch */ color: oklch(69.2% 0.138 157.1);

Tailwind

colors: {
  custom: {
    50: '#82cca0',
    500: '#40b579',
    950: '#000000',
  },
}

SCSS

$custom: #40b579;
$custom-light: #82cca0;
$custom-dark: #000000;

JSON

{
  "hex": "#40b579",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 121
  },
  "hsl": {
    "h": 149.231,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.69201,
    "c": 0.1377,
    "h": 157.1
  },
  "luminance": 0.35518
}

Semantic roles & 50–950 ramp

primary

#40B579

secondary

#C58BA9

accent

#5096D7

background

#F8FCF9

surface

#F0F9F2

border

#CBD2CC

text

#0B130E

muted

#7C827E

Preview Lab

Preview with #40B579

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

Preview Lab → · Contrast checker → · Palette generator →