#40B551#40B551

#40B551 is a light, vivid green. Relative luminance 0.347; OKLCH L 68.5% C 0.175 H 145.9°. Best body text is #000000 at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#40B551
RGB	rgb(64, 181, 81)
HSL	hsl(129, 48%, 48%)
HSV	hsv(129, 65%, 71%)
CMYK	cmyk(64.6%, 0%, 55.2%, 29%)
CIE-LAB	lab(65.54, -53.46, 41.04)
CIE-LCH	lch(65.54, 67.39, 142.49°)
OKLab	oklab(68.5% -0.1445 0.098)
OKLCH	oklch(68.5% 0.175 145.9)
XYZ	xyz(20.1221, 34.7298, 13.4261)
Luminance	0.3473 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B551 #B540A4

analogous

#69B540 #40B551 #40B58B

triadic

#40B551 #5140B5 #B55140

tetradic

#40B551 #4069B5 #B540A4 #B58B40

square

#40B551 #4069B5 #B540A4 #B58B40

split-complementary

#40B551 #8B40B5 #B54069

monochromatic

#205B29 #30883D #40B551 #68CA77 #96DAA0

Accessibility & contrast

On white

2.64

#40B551 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.95

#40B551 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B551

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B551	#FFFFFF	#000000	##000000
##40B551	1.00	2.64	7.95	7.95
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.95	21.00	1.00	1.00
##000000	7.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A548

Deuteranopia (green-blind)

#A99B59

Tritanopia (blue-blind)

#20B19F

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #40b551;
/* rgb */ color: rgb(64, 181, 81);
/* oklch */ color: oklch(68.5% 0.175 145.9);

Tailwind

colors: {
  custom: {
    50: '#82cc84',
    500: '#40b551',
    950: '#000000',
  },
}

SCSS

$custom: #40b551;
$custom-light: #82cc84;
$custom-dark: #000000;

JSON

{
  "hex": "#40b551",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 81
  },
  "hsl": {
    "h": 128.718,
    "s": 47.755,
    "l": 48.039
  },
  "oklch": {
    "l": 0.68499,
    "c": 0.17458,
    "h": 145.9
  },
  "luminance": 0.34732
}

Semantic roles & 50–950 ramp

primary

#40B551

secondary

#C58BBD

accent

#50C4D7

background

#F8FCF8

surface

#F0F9EF

border

#CBD2CA

text

#0C130B

muted

#7D827C

Preview Lab

Preview with #40B551

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

Preview Lab → · Contrast checker → · Palette generator →