#40FF9F#40FF9F

#40FF9F is a very light, vivid green. Relative luminance 0.751; OKLCH L 88.6% C 0.199 H 155.7°. Best body text is #000000 at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#40FF9F
RGB	rgb(64, 255, 159)
HSL	hsl(150, 100%, 63%)
HSV	hsv(150, 75%, 100%)
CMYK	cmyk(74.9%, 0%, 37.6%, 0%)
CIE-LAB	lab(89.44, -67.33, 32.86)
CIE-LCH	lch(89.44, 74.92, 153.99°)
OKLab	oklab(88.6% -0.1817 0.0821)
OKLCH	oklch(88.6% 0.199 155.7)
XYZ	xyz(44.1281, 75.1079, 44.9658)
Luminance	0.7511 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40FF9F #FF40A0

analogous

#40FF40 #40FF9F #40FFFF

triadic

#40FF9F #9F40FF #FF9F40

tetradic

#40FF9F #4040FF #FF40A0 #FFFF40

square

#40FF9F #4040FF #FF40A0 #FFFF40

split-complementary

#40FF9F #FF40FF #FF4040

monochromatic

#00C562 #03FF80 #40FF9F #7DFFBE #BAFFDD

Accessibility & contrast

On white

1.31

#40FF9F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.02

#40FF9F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40FF9F

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40FF9F	#FFFFFF	#000000	##000000
##40FF9F	1.00	1.31	16.02	16.02
#FFFFFF	1.31	1.00	21.00	21.00
#000000	16.02	21.00	1.00	1.00
##000000	16.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FEEA99

Deuteranopia (green-blind)

#E7DAA5

Tritanopia (blue-blind)

#00FDE7

Achromatopsia (no color)

#E1E1E1

Design tokens & code

CSS

--color: #40ff9f;
/* rgb */ color: rgb(64, 255, 159);
/* oklch */ color: oklch(88.6% 0.199 155.7);

Tailwind

colors: {
  custom: {
    50: '#8fffbc',
    500: '#40ff9f',
    950: '#000000',
  },
}

SCSS

$custom: #40ff9f;
$custom-light: #8fffbc;
$custom-dark: #000000;

JSON

{
  "hex": "#40ff9f",
  "rgb": {
    "r": 64,
    "g": 255,
    "b": 159
  },
  "hsl": {
    "h": 149.843,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.88598,
    "c": 0.19939,
    "h": 155.7
  },
  "luminance": 0.75113
}

Semantic roles & 50–950 ramp

primary

#40FF9F

secondary

#C12272

accent

#0073E6

background

#FCFFFD

surface

#F5FFF8

border

#CFD7D1

text

#0E1812

muted

#7F8682

Preview Lab

Preview with #40FF9F

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

Preview Lab → · Contrast checker → · Palette generator →