#40FF4E#40FF4E

#40FF4E is a very light, highly saturated green. Relative luminance 0.732; OKLCH L 87.5% C 0.262 H 143.8°. Best body text is #000000 at 15.63:1 contrast (WCAG AA passes).

Color values

HEX	#40FF4E
RGB	rgb(64, 255, 78)
HSL	hsl(124, 100%, 63%)
HSV	hsv(124, 75%, 100%)
CMYK	cmyk(74.9%, 0%, 69.4%, 0%)
CIE-LAB	lab(88.52, -78.20, 67.94)
CIE-LCH	lch(88.52, 103.59, 139.01°)
OKLab	oklab(87.54% -0.2117 0.1551)
OKLCH	oklch(87.54% 0.262 143.8)
XYZ	xyz(39.2469, 73.1555, 19.2583)
Luminance	0.7316 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40FF4E #FF40F1

analogous

#91FF40 #40FF4E #40FFAE

triadic

#40FF4E #4E40FF #FF4E40

tetradic

#40FF4E #4091FF #FF40F1 #FFAE40

square

#40FF4E #4091FF #FF40F1 #FFAE40

split-complementary

#40FF4E #AE40FF #FF4091

monochromatic

#00C50E #03FF15 #40FF4E #7DFF87 #BAFFBF

Accessibility & contrast

On white

1.34

#40FF4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.63

#40FF4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40FF4E

15.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40FF4E	#FFFFFF	#000000	##000000
##40FF4E	1.00	1.34	15.63	15.63
#FFFFFF	1.34	1.00	21.00	21.00
#000000	15.63	21.00	1.00	1.00
##000000	15.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE732

Deuteranopia (green-blind)

#EFD960

Tritanopia (blue-blind)

#00F8DC

Achromatopsia (no color)

#DEDEDE

Design tokens & code

CSS

--color: #40ff4e;
/* rgb */ color: rgb(64, 255, 78);
/* oklch */ color: oklch(87.5% 0.262 143.8);

Tailwind

colors: {
  custom: {
    50: '#92ff88',
    500: '#40ff4e',
    950: '#000000',
  },
}

SCSS

$custom: #40ff4e;
$custom-light: #92ff88;
$custom-dark: #000000;

JSON

{
  "hex": "#40ff4e",
  "rgb": {
    "r": 64,
    "g": 255,
    "b": 78
  },
  "hsl": {
    "h": 124.398,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.87536,
    "c": 0.2624,
    "h": 143.8
  },
  "luminance": 0.7316
}

Semantic roles & 50–950 ramp

primary

#40FF4E

secondary

#C122B5

accent

#00D5E6

background

#FCFFFC

surface

#F5FFF4

border

#CFD7CE

text

#0F180C

muted

#80867F

Preview Lab

Preview with #40FF4E

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

Preview Lab → · Contrast checker → · Palette generator →