#F3FF3D#F3FF3D

#F3FF3D is a very light, vivid yellow. Relative luminance 0.909; OKLCH L 96.0% C 0.199 H 113.3°. Best body text is #000000 at 19.18:1 contrast (WCAG AA passes).

Color values

HEX	#F3FF3D
RGB	rgb(243, 255, 61)
HSL	hsl(64, 100%, 62%)
HSV	hsv(64, 76%, 100%)
CMYK	cmyk(4.7%, 0%, 76.1%, 0%)
CIE-LAB	lab(96.37, -25.30, 83.81)
CIE-LCH	lch(96.37, 87.54, 106.80°)
OKLab	oklab(96.01% -0.0786 0.183)
OKLCH	oklch(96.01% 0.199 113.3)
XYZ	xyz(73.5668, 90.9132, 18.0866)
Luminance	0.9091 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3FF3D #493DFF

analogous

#FFAA3D #F3FF3D #92FF3D

triadic

#F3FF3D #3DF3FF #FF3DF3

tetradic

#F3FF3D #3DFFAA #493DFF #FF3D92

square

#F3FF3D #3DFFAA #493DFF #FF3D92

split-complementary

#F3FF3D #3D92FF #AA3DFF

monochromatic

#B6C200 #EFFF00 #F3FF3D #F7FF7A #FBFFB7

Accessibility & contrast

On white

1.09

#F3FF3D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

19.18

#F3FF3D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3FF3D

19.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3FF3D	#FFFFFF	#000000	##000000
##F3FF3D	1.00	1.09	19.18	19.18
#FFFFFF	1.09	1.00	21.00	21.00
#000000	19.18	21.00	1.00	1.00
##000000	19.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF300

Deuteranopia (green-blind)

#FFF64F

Tritanopia (blue-blind)

#FFF0DB

Achromatopsia (no color)

#F5F5F5

Design tokens & code

CSS

--color: #f3ff3d;
/* rgb */ color: rgb(243, 255, 61);
/* oklch */ color: oklch(96.0% 0.199 113.3);

Tailwind

colors: {
  custom: {
    50: '#fbff82',
    500: '#f3ff3d',
    950: '#000000',
  },
}

SCSS

$custom: #f3ff3d;
$custom-light: #fbff82;
$custom-dark: #000000;

JSON

{
  "hex": "#f3ff3d",
  "rgb": {
    "r": 243,
    "g": 255,
    "b": 61
  },
  "hsl": {
    "h": 63.711,
    "s": 100,
    "l": 61.961
  },
  "oklch": {
    "l": 0.96008,
    "c": 0.19918,
    "h": 113.3
  },
  "luminance": 0.90912
}

Semantic roles & 50–950 ramp

primary

#F3FF3D

secondary

#2B22BF

accent

#00E60E

background

#FFFFFC

surface

#FFFFF3

border

#D7D7CD

text

#18170C

muted

#86857F

Preview Lab

Preview with #F3FF3D

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

Preview Lab → · Contrast checker → · Palette generator →