#F3F581#F3F581

#F3F581 is a very light, vivid yellow. Relative luminance 0.859; OKLCH L 94.5% C 0.139 H 109.7°. Best body text is #000000 at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#F3F581
RGB	rgb(243, 245, 129)
HSL	hsl(61, 85%, 73%)
HSV	hsv(61, 47%, 96%)
CMYK	cmyk(0.8%, 0%, 47.3%, 3.9%)
CIE-LAB	lab(94.29, -16.28, 55.17)
CIE-LCH	lch(94.29, 57.52, 106.45°)
OKLab	oklab(94.51% -0.0468 0.131)
OKLCH	oklch(94.51% 0.139 109.7)
XYZ	xyz(73.5785, 85.9461, 33.4779)
Luminance	0.8594 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3F581 #8381F5

analogous

#F5BD81 #F3F581 #B9F581

triadic

#F3F581 #81F3F5 #F581F3

tetradic

#F3F581 #81F5BD #8381F5 #F581B9

square

#F3F581 #81F5BD #8381F5 #F581B9

split-complementary

#F3F581 #81B9F5 #BD81F5

monochromatic

#E5E913 #EEF048 #F3F581 #F8F9BA #FCFDE3

Accessibility & contrast

On white

1.15

#F3F581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.19

#F3F581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3F581

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3F581	#FFFFFF	#000000	##000000
##F3F581	1.00	1.15	18.19	18.19
#FFFFFF	1.15	1.00	21.00	21.00
#000000	18.19	21.00	1.00	1.00
##000000	18.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFEC77

Deuteranopia (green-blind)

#FFF187

Tritanopia (blue-blind)

#FFE9DA

Achromatopsia (no color)

#EFEFEF

Design tokens & code

CSS

--color: #f3f581;
/* rgb */ color: rgb(243, 245, 129);
/* oklch */ color: oklch(94.5% 0.139 109.7);

Tailwind

colors: {
  custom: {
    50: '#f9f8a8',
    500: '#f3f581',
    950: '#000000',
  },
}

SCSS

$custom: #f3f581;
$custom-light: #f9f8a8;
$custom-dark: #000000;

JSON

{
  "hex": "#f3f581",
  "rgb": {
    "r": 243,
    "g": 245,
    "b": 129
  },
  "hsl": {
    "h": 61.034,
    "s": 85.294,
    "l": 73.333
  },
  "oklch": {
    "l": 0.9451,
    "c": 0.13915,
    "h": 109.7
  },
  "luminance": 0.85944
}

Semantic roles & 50–950 ramp

primary

#F3F581

secondary

#4B49D1

accent

#04E208

background

#FFFFFD

surface

#FFFEF7

border

#D7D6D0

text

#181710

muted

#868581

Preview Lab

Preview with #F3F581

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

Preview Lab → · Contrast checker → · Palette generator →