#F4FF57#F4FF57

#F4FF57 is a very light, vivid yellow. Relative luminance 0.914; OKLCH L 96.2% C 0.184 H 113.0°. Best body text is #000000 at 19.29:1 contrast (WCAG AA passes).

Color values

HEX	#F4FF57
RGB	rgb(244, 255, 87)
HSL	hsl(64, 100%, 67%)
HSV	hsv(64, 66%, 100%)
CMYK	cmyk(4.3%, 0%, 65.9%, 0%)
CIE-LAB	lab(96.59, -23.70, 75.49)
CIE-LCH	lch(96.59, 79.12, 107.43°)
OKLab	oklab(96.25% -0.072 0.1696)
OKLCH	oklch(96.25% 0.184 113)
XYZ	xyz(74.7906, 91.4428, 22.7254)
Luminance	0.9144 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F4FF57 #6257FF

analogous

#FFB657 #F4FF57 #A0FF57

triadic

#F4FF57 #57F4FF #FF57F4

tetradic

#F4FF57 #57FFB6 #6257FF #FF57A0

square

#F4FF57 #57FFB6 #6257FF #FF57A0

split-complementary

#F4FF57 #57A0FF #B657FF

monochromatic

#CDDC00 #F0FF1A #F4FF57 #F8FF94 #FCFFD1

Accessibility & contrast

On white

1.09

#F4FF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.29

#F4FF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F4FF57

19.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F4FF57	#FFFFFF	#000000	##000000
##F4FF57	1.00	1.09	19.29	19.29
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.29	21.00	1.00	1.00
##000000	19.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF33E

Deuteranopia (green-blind)

#FFF763

Tritanopia (blue-blind)

#FFF0DD

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #f4ff57;
/* rgb */ color: rgb(244, 255, 87);
/* oklch */ color: oklch(96.2% 0.184 113.0);

Tailwind

colors: {
  custom: {
    50: '#fbff8f',
    500: '#f4ff57',
    950: '#000000',
  },
}

SCSS

$custom: #f4ff57;
$custom-light: #fbff8f;
$custom-dark: #000000;

JSON

{
  "hex": "#f4ff57",
  "rgb": {
    "r": 244,
    "g": 255,
    "b": 87
  },
  "hsl": {
    "h": 63.929,
    "s": 100,
    "l": 67.059
  },
  "oklch": {
    "l": 0.96247,
    "c": 0.18427,
    "h": 113
  },
  "luminance": 0.91441
}

Semantic roles & 50–950 ramp

primary

#F4FF57

secondary

#3126D5

accent

#00E60F

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F4FF57

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

Preview Lab → · Contrast checker → · Palette generator →