#F3FF57#F3FF57

#F3FF57 is a very light, vivid yellow. Relative luminance 0.913; OKLCH L 96.2% C 0.185 H 113.3°. Best body text is #000000 at 19.25:1 contrast (WCAG AA passes).

Color values

HEX	#F3FF57
RGB	rgb(243, 255, 87)
HSL	hsl(64, 100%, 67%)
HSV	hsv(64, 66%, 100%)
CMYK	cmyk(4.7%, 0%, 65.9%, 0%)
CIE-LAB	lab(96.52, -24.10, 75.39)
CIE-LCH	lch(96.52, 79.15, 107.73°)
OKLab	oklab(96.17% -0.0731 0.1694)
OKLCH	oklch(96.17% 0.185 113.3)
XYZ	xyz(74.4445, 91.2643, 22.7091)
Luminance	0.9126 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3FF57 #6357FF

analogous

#FFB757 #F3FF57 #9FFF57

triadic

#F3FF57 #57F3FF #FF57F3

tetradic

#F3FF57 #57FFB7 #6357FF #FF579F

square

#F3FF57 #57FFB7 #6357FF #FF579F

split-complementary

#F3FF57 #579FFF #B757FF

monochromatic

#CCDC00 #EFFF1A #F3FF57 #F7FF94 #FCFFD1

Accessibility & contrast

On white

1.09

#F3FF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.25

#F3FF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3FF57

19.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3FF57	#FFFFFF	#000000	##000000
##F3FF57	1.00	1.09	19.25	19.25
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.25	21.00	1.00	1.00
##000000	19.25	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: #f3ff57;
/* rgb */ color: rgb(243, 255, 87);
/* oklch */ color: oklch(96.2% 0.185 113.3);

Tailwind

colors: {
  custom: {
    50: '#fbff8f',
    500: '#f3ff57',
    950: '#000000',
  },
}

SCSS

$custom: #f3ff57;
$custom-light: #fbff8f;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ff57",
  "rgb": {
    "r": 243,
    "g": 255,
    "b": 87
  },
  "hsl": {
    "h": 64.286,
    "s": 100,
    "l": 67.059
  },
  "oklch": {
    "l": 0.9617,
    "c": 0.18452,
    "h": 113.3
  },
  "luminance": 0.91263
}

Semantic roles & 50–950 ramp

primary

#F3FF57

secondary

#3226D5

accent

#00E610

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F3FF57

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

Preview Lab → · Contrast checker → · Palette generator →