#40FF59#40FF59

#40FF59 is a very light, highly saturated green. Relative luminance 0.733; OKLCH L 87.6% C 0.256 H 144.7°. Best body text is #000000 at 15.67:1 contrast (WCAG AA passes).

Color values

HEX	#40FF59
RGB	rgb(64, 255, 89)
HSL	hsl(128, 100%, 63%)
HSV	hsv(128, 75%, 100%)
CMYK	cmyk(74.9%, 0%, 65.1%, 0%)
CIE-LAB	lab(88.60, -77.20, 63.87)
CIE-LCH	lch(88.60, 100.19, 140.40°)
OKLab	oklab(87.63% -0.2085 0.1477)
OKLCH	oklch(87.63% 0.256 144.7)
XYZ	xyz(39.6748, 73.3266, 21.5117)
Luminance	0.7333 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40FF59 #FF40E6

analogous

#87FF40 #40FF59 #40FFB8

triadic

#40FF59 #5940FF #FF5940

tetradic

#40FF59 #4087FF #FF40E6 #FFB840

square

#40FF59 #4087FF #FF40E6 #FFB840

split-complementary

#40FF59 #B840FF #FF4087

monochromatic

#00C51A #03FF24 #40FF59 #7DFF8E #BAFFC3

Accessibility & contrast

On white

1.34

#40FF59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.67

#40FF59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40FF59

15.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40FF59	#FFFFFF	#000000	##000000
##40FF59	1.00	1.34	15.67	15.67
#FFFFFF	1.34	1.00	21.00	21.00
#000000	15.67	21.00	1.00	1.00
##000000	15.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE743

Deuteranopia (green-blind)

#EED968

Tritanopia (blue-blind)

#00F8DD

Achromatopsia (no color)

#DEDEDE

Design tokens & code

CSS

--color: #40ff59;
/* rgb */ color: rgb(64, 255, 89);
/* oklch */ color: oklch(87.6% 0.256 144.7);

Tailwind

colors: {
  custom: {
    50: '#91ff8f',
    500: '#40ff59',
    950: '#000000',
  },
}

SCSS

$custom: #40ff59;
$custom-light: #91ff8f;
$custom-dark: #000000;

JSON

{
  "hex": "#40ff59",
  "rgb": {
    "r": 64,
    "g": 255,
    "b": 89
  },
  "hsl": {
    "h": 127.853,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.87629,
    "c": 0.25553,
    "h": 144.7
  },
  "luminance": 0.73331
}

Semantic roles & 50–950 ramp

primary

#40FF59

secondary

#C122AC

accent

#00C7E6

background

#FCFFFC

surface

#F5FFF4

border

#CFD7CE

text

#0F180D

muted

#80867F

Preview Lab

Preview with #40FF59

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

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