Inspect Snow (#FFFAFA) in HEX, RGB, HSL, LCH and OKLCH, check its contrast, and copy the value you need.
Snow
#FFFAFA
Black text reads best on this background, at 20.31:1.
Snow is one of the 148 CSS named colors, and resolves to #FFFAFA in every browser. In numbers that is rgb(255, 250, 250) and hsl(0, 100%, 99%). Perceptually it is a very light, near-neutral color: OKLCH puts its lightness at 99% and its chroma at 0.005. It carries almost no chroma, so it behaves as a neutral rather than as a hue, and belongs with the off-whites.
White text only reaches 1.03:1 here, so black text is the safer pairing at 20.31:1. Because it is this light, Snow works best as a page or card background with dark text over it.
The closest CSS named colors to Snow, measured with CIEDE2000, are White (#FFFFFF), WhiteSmoke (#F5F5F5), SeaShell (#FFF5EE). If Snow is not quite right, those are the nearest keywords to try before reaching for a custom value.
HEX
#FFFAFA
RGB
rgb(255, 250, 250)
HSL
hsl(0, 100%, 99%)
HWB
hwb(0 98% 0%)
CMYK
cmyk(0%, 2%, 2%, 0%)
LAB
lab(98.66 1.72 0.62)
LCH
lch(98.66 1.83 19.82)
OKLCH
oklch(98.89% 0.0053 17.25)
WCAG asks for 4.5:1 between body text and its background. On #FFFAFA white text measures 1.03:1 and black text 20.31:1, so black clears it and white does not.
White text on Snow
WCAG 2.2
1.03:1
APCA
Lc 0
Fails AA body text
Fails AAA body text
Fails AA large text
Black text on Snow
WCAG 2.2
20.31:1
APCA
Lc 103
Passes AA body text
Passes AAA body text
Passes AA large text
Check Snow against any other color in the contrast checker.
Snow sits at 99% OKLCH lightness. Holding its hue and chroma and moving only that value carries it down to #070505, which keeps the family recognizable instead of letting it drift toward gray the way a plain HSL ramp does.
#C6C1C1
20% darker
#908B8B
40% darker
#5D5959
60% darker
#2F2B2B
80% darker
#070505
100% darker
Build a full accessible scale from #FFFAFA in the shade generator.
The biggest shift is under protanopia, where #FFFAFA reads as #FBFBFA, 2.6 CIEDE2000 units away. If Snow is the only thing marking a state or a series, roughly one viewer in twelve will miss it.
Protanopia
#FBFBFA
Deuteranopia
#FCFBFA
Tritanopia
#FFFAFA
Achromatopsia
#FBFBFB
The nearest CSS keywords to #FFFAFA, ranked by perceptual distance rather than by how close their hex digits happen to look.