#F3FF63#F3FF63
#F3FF63 is a very light, vivid yellow. Relative luminance 0.915; OKLCH L 96.3% C 0.176 H 113.4°. Best body text is #000000 at 19.30:1 contrast (WCAG AA passes).
Color values
| HEX | #F3FF63 |
|---|---|
| RGB | rgb(243, 255, 99) |
| HSL | hsl(65, 100%, 69%) |
| HSV | hsv(65, 61%, 100%) |
| CMYK | cmyk(4.7%, 0%, 61.2%, 0%) |
| CIE-LAB | lab(96.61, -23.38, 70.85) |
| CIE-LCH | lch(96.61, 74.61, 108.26°) |
| OKLab | oklab(96.27% -0.0699 0.1616) |
| OKLCH | oklch(96.27% 0.176 113.4) |
| XYZ | xyz(74.9762, 91.4770, 25.5092) |
| Luminance | 0.9148 (WCAG relative) |
| Temperature | warm |
| Family | yellow |
Closest named colors
Canary
#FDFF63
ΔE00 2.17
Pastel Yellow
#FFFE71
ΔE00 2.89
Banana Yellow
#FAFE4B
ΔE00 2.90
Lemon (survey)
#FDFF52
ΔE00 2.90
Butter Yellow
#FFFD74
ΔE00 3.22
Light Yellow
#FFFE7A
ΔE00 3.34
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#F3FF63 #6F63FF
analogous
#FFBD63 #F3FF63 #A5FF63
triadic
#F3FF63 #63F3FF #FF63F3
tetradic
#F3FF63 #63FFBD #6F63FF #FF63A5
square
#F3FF63 #63FFBD #6F63FF #FF63A5
split-complementary
#F3FF63 #63A5FF #BD63FF
monochromatic
#D6E800 #EEFF26 #F3FF63 #F8FFA0 #FCFFDD
Accessibility & contrast
On white
1.09
#F3FF63 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
19.30
#F3FF63 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #F3FF63
19.30:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##F3FF63 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##F3FF63 | 1.00 | 1.09 | 19.30 | 19.30 |
| #FFFFFF | 1.09 | 1.00 | 21.00 | 21.00 |
| #000000 | 19.30 | 21.00 | 1.00 | 1.00 |
| ##000000 | 19.30 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#FFF450
Deuteranopia (green-blind)
#FFF76D
Tritanopia (blue-blind)
#FFF1DE
Achromatopsia (no color)
#F5F5F5
Design tokens & code
CSS
--color: #f3ff63; /* rgb */ color: rgb(243, 255, 99); /* oklch */ color: oklch(96.3% 0.176 113.4);
Tailwind
colors: {
custom: {
50: '#faff96',
500: '#f3ff63',
950: '#000000',
},
}SCSS
$custom: #f3ff63; $custom-light: #faff96; $custom-dark: #000000;
JSON
{
"hex": "#f3ff63",
"rgb": {
"r": 243,
"g": 255,
"b": 99
},
"hsl": {
"h": 64.615,
"s": 100,
"l": 69.412
},
"oklch": {
"l": 0.96268,
"c": 0.17604,
"h": 113.4
},
"luminance": 0.91476
}Semantic roles & 50–950 ramp
primary
#F3FF63
secondary
#3A2CDA
accent
#00E612
background
#FFFFFC
surface
#FFFFF5
border
#D7D7CF
text
#18170E
muted
#86857F