#F3FB66#F3FB66

#F3FB66 is a very light, vivid yellow. Relative luminance 0.890; OKLCH L 95.5% C 0.169 H 112.1°. Best body text is #000000 at 18.80:1 contrast (WCAG AA passes).

Color values

HEX	#F3FB66
RGB	rgb(243, 251, 102)
HSL	hsl(63, 95%, 69%)
HSV	hsv(63, 59%, 98%)
CMYK	cmyk(3.2%, 0%, 59.4%, 1.6%)
CIE-LAB	lab(95.58, -21.28, 68.53)
CIE-LCH	lch(95.58, 71.76, 107.25°)
OKLab	oklab(95.46% -0.0637 0.157)
OKLCH	oklch(95.46% 0.169 112.1)
XYZ	xyz(73.8595, 89.0099, 25.8577)
Luminance	0.8901 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#F3FB66 #6E66FB

analogous

#FBB866 #F3FB66 #A9FB66

triadic

#F3FB66 #66F3FB #FB66F3

tetradic

#F3FB66 #66FBB8 #6E66FB #FB66A9

square

#F3FB66 #66FBB8 #6E66FB #FB66A9

split-complementary

#F3FB66 #66A9FB #B866FB

monochromatic

#D5E106 #EEF92A #F3FB66 #F8FDA2 #FCFEDD

Accessibility & contrast

On white

1.12

#F3FB66 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

18.80

#F3FB66 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #F3FB66

18.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##F3FB66	#FFFFFF	#000000	##000000
##F3FB66	1.00	1.12	18.80	18.80
#FFFFFF	1.12	1.00	21.00	21.00
#000000	18.80	21.00	1.00	1.00
##000000	18.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFF055

Deuteranopia (green-blind)

#FFF46F

Tritanopia (blue-blind)

#FFEDDB

Achromatopsia (no color)

#F2F2F2

Design tokens & code

CSS

--color: #f3fb66;
/* rgb */ color: rgb(243, 251, 102);
/* oklch */ color: oklch(95.5% 0.169 112.1);

Tailwind

colors: {
  custom: {
    50: '#fafc97',
    500: '#f3fb66',
    950: '#000000',
  },
}

SCSS

$custom: #f3fb66;
$custom-light: #fafc97;
$custom-dark: #000000;

JSON

{
  "hex": "#f3fb66",
  "rgb": {
    "r": 243,
    "g": 251,
    "b": 102
  },
  "hsl": {
    "h": 63.221,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.95459,
    "c": 0.16947,
    "h": 112.1
  },
  "luminance": 0.89008
}

Semantic roles & 50–950 ramp

primary

#F3FB66

secondary

#3930D5

accent

#00E60C

background

#FFFFFC

surface

#FFFFF5

border

#D7D7CF

text

#18170E

muted

#86857F

Preview Lab

Preview with #F3FB66

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

Preview Lab → · Contrast checker → · Palette generator →