#F4FF63#F4FF63

#F4FF63 is a very light, vivid yellow. Relative luminance 0.917; OKLCH L 96.3% C 0.176 H 113.1°. Best body text is #000000 at 19.33:1 contrast (WCAG AA passes).

Color values

HEX	#F4FF63
RGB	rgb(244, 255, 99)
HSL	hsl(64, 100%, 69%)
HSV	hsv(64, 61%, 100%)
CMYK	cmyk(4.3%, 0%, 61.2%, 0%)
CIE-LAB	lab(96.68, -22.99, 70.95)
CIE-LCH	lch(96.68, 74.59, 107.95°)
OKLab	oklab(96.34% -0.0688 0.1618)
OKLCH	oklch(96.34% 0.176 113.1)
XYZ	xyz(75.3223, 91.6555, 25.5254)
Luminance	0.9165 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F4FF63 #6E63FF

analogous

#FFBC63 #F4FF63 #A6FF63

triadic

#F4FF63 #63F4FF #FF63F4

tetradic

#F4FF63 #63FFBC #6E63FF #FF63A6

square

#F4FF63 #63FFBC #6E63FF #FF63A6

split-complementary

#F4FF63 #63A6FF #BC63FF

monochromatic

#D7E800 #F0FF26 #F4FF63 #F8FFA0 #FDFFDD

Accessibility & contrast

On white

1.09

#F4FF63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.33

#F4FF63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F4FF63

19.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F4FF63	#FFFFFF	#000000	##000000
##F4FF63	1.00	1.09	19.33	19.33
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.33	21.00	1.00	1.00
##000000	19.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF450

Deuteranopia (green-blind)

#FFF76D

Tritanopia (blue-blind)

#FFF1DE

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #f4ff63;
/* rgb */ color: rgb(244, 255, 99);
/* oklch */ color: oklch(96.3% 0.176 113.1);

Tailwind

colors: {
  custom: {
    50: '#fbff96',
    500: '#f4ff63',
    950: '#000000',
  },
}

SCSS

$custom: #f4ff63;
$custom-light: #fbff96;
$custom-dark: #000000;

JSON

{
  "hex": "#f4ff63",
  "rgb": {
    "r": 244,
    "g": 255,
    "b": 99
  },
  "hsl": {
    "h": 64.231,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.96344,
    "c": 0.17579,
    "h": 113.1
  },
  "luminance": 0.91654
}

Semantic roles & 50–950 ramp

primary

#F4FF63

secondary

#392CDA

accent

#00E610

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #F4FF63

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

Preview Lab → · Contrast checker → · Palette generator →