#F5FF57#F5FF57

#F5FF57 is a very light, vivid yellow. Relative luminance 0.916; OKLCH L 96.3% C 0.184 H 112.7°. Best body text is #000000 at 19.32:1 contrast (WCAG AA passes).

Color values

HEX	#F5FF57
RGB	rgb(245, 255, 87)
HSL	hsl(64, 100%, 67%)
HSV	hsv(64, 66%, 100%)
CMYK	cmyk(3.9%, 0%, 65.9%, 0%)
CIE-LAB	lab(96.67, -23.31, 75.59)
CIE-LCH	lch(96.67, 79.10, 107.14°)
OKLab	oklab(96.32% -0.071 0.1698)
OKLCH	oklch(96.32% 0.184 112.7)
XYZ	xyz(75.1387, 91.6222, 22.7417)
Luminance	0.9162 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F5FF57 #6157FF

analogous

#FFB557 #F5FF57 #A1FF57

triadic

#F5FF57 #57F5FF #FF57F5

tetradic

#F5FF57 #57FFB5 #6157FF #FF57A1

square

#F5FF57 #57FFB5 #6157FF #FF57A1

split-complementary

#F5FF57 #57A1FF #B557FF

monochromatic

#CFDC00 #F1FF1A #F5FF57 #F9FF94 #FCFFD1

Accessibility & contrast

On white

1.09

#F5FF57 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.32

#F5FF57 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F5FF57

19.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F5FF57	#FFFFFF	#000000	##000000
##F5FF57	1.00	1.09	19.32	19.32
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.32	21.00	1.00	1.00
##000000	19.32	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: #f5ff57;
/* rgb */ color: rgb(245, 255, 87);
/* oklch */ color: oklch(96.3% 0.184 112.7);

Tailwind

colors: {
  custom: {
    50: '#fcff8f',
    500: '#f5ff57',
    950: '#000000',
  },
}

SCSS

$custom: #f5ff57;
$custom-light: #fcff8f;
$custom-dark: #000000;

JSON

{
  "hex": "#f5ff57",
  "rgb": {
    "r": 245,
    "g": 255,
    "b": 87
  },
  "hsl": {
    "h": 63.571,
    "s": 100,
    "l": 67.059
  },
  "oklch": {
    "l": 0.96324,
    "c": 0.18402,
    "h": 112.7
  },
  "luminance": 0.91621
}

Semantic roles & 50–950 ramp

primary

#F5FF57

secondary

#3026D5

accent

#00E60E

background

#FFFFFC

surface

#FFFFF4

border

#D7D7CE

text

#18170D

muted

#86857F

Preview Lab

Preview with #F5FF57

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

Preview Lab → · Contrast checker → · Palette generator →