#40BF51#40BF51

#40BF51 is a light, vivid green. Relative luminance 0.389; OKLCH L 71.1% C 0.187 H 145.5°. Best body text is #000000 at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#40BF51
RGB	rgb(64, 191, 81)
HSL	hsl(128, 50%, 50%)
HSV	hsv(128, 66%, 75%)
CMYK	cmyk(66.5%, 0%, 57.6%, 25.1%)
CIE-LAB	lab(68.71, -57.07, 44.80)
CIE-LCH	lch(68.71, 72.56, 141.87°)
OKLab	oklab(71.12% -0.1543 0.1062)
OKLCH	oklch(71.12% 0.187 145.5)
XYZ	xyz(22.2289, 38.9434, 14.1283)
Luminance	0.3895 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BF51 #BF40AE

analogous

#6FBF40 #40BF51 #40BF90

triadic

#40BF51 #5140BF #BF5140

tetradic

#40BF51 #406FBF #BF40AE #BF9040

square

#40BF51 #406FBF #BF40AE #BF9040

split-complementary

#40BF51 #9040BF #BF406F

monochromatic

#21632A #31913E #40BF51 #6ECE7B #9CDEA5

Accessibility & contrast

On white

2.39

#40BF51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.79

#40BF51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BF51

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BF51	#FFFFFF	#000000	##000000
##40BF51	1.00	2.39	8.79	8.79
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.79	21.00	1.00	1.00
##000000	8.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AE46

Deuteranopia (green-blind)

#B3A35A

Tritanopia (blue-blind)

#19BAA7

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #40bf51;
/* rgb */ color: rgb(64, 191, 81);
/* oklch */ color: oklch(71.1% 0.187 145.5);

Tailwind

colors: {
  custom: {
    50: '#84d385',
    500: '#40bf51',
    950: '#000000',
  },
}

SCSS

$custom: #40bf51;
$custom-light: #84d385;
$custom-dark: #000000;

JSON

{
  "hex": "#40bf51",
  "rgb": {
    "r": 64,
    "g": 191,
    "b": 81
  },
  "hsl": {
    "h": 128.031,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.7112,
    "c": 0.18728,
    "h": 145.5
  },
  "luminance": 0.38946
}

Semantic roles & 50–950 ramp

primary

#40BF51

secondary

#CA91C2

accent

#4EC7D9

background

#F8FDF8

surface

#F0FAEF

border

#CBD3CA

text

#0C140B

muted

#7D837C

Preview Lab

Preview with #40BF51

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

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