Inspect OldLace (#FDF5E6) in HEX, RGB, HSL, LCH and OKLCH, check its contrast, and copy the value you need.
OldLace
#FDF5E6
Black text reads best on this background, at 19.38:1.
OldLace is one of the 148 CSS named colors, and resolves to #FDF5E6 in every browser. In numbers that is rgb(253, 245, 230) and hsl(39, 85%, 95%). Perceptually it is a very light, near-neutral color: OKLCH puts its lightness at 97% and its chroma at 0.022. 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 1.08:1 here, so black text is the safer pairing at 19.38:1. Because it is this light, OldLace works best as a page or card background with dark text over it.
The closest CSS named colors to OldLace, measured with CIEDE2000, are FloralWhite (#FFFAF0), Linen (#FAF0E6), AntiqueWhite (#FAEBD7). If OldLace is not quite right, those are the nearest keywords to try before reaching for a custom value.
HEX
#FDF5E6
RGB
rgb(253, 245, 230)
HSL
hsl(39, 85%, 95%)
HWB
hwb(39 90% 1%)
CMYK
cmyk(0%, 3%, 9%, 1%)
LAB
lab(96.87 0.91 8.25)
LCH
lch(96.87 8.3 83.68)
OKLCH
oklch(97.23% 0.0216 83.26)
WCAG asks for 4.5:1 between body text and its background. On #FDF5E6 white text measures 1.08:1 and black text 19.38:1, so black clears it and white does not.
White text on OldLace
WCAG 2.2
1.08:1
APCA
Lc 0
Fails AA body text
Fails AAA body text
Fails AA large text
Black text on OldLace
WCAG 2.2
19.38:1
APCA
Lc 100
Passes AA body text
Passes AAA body text
Passes AA large text
Check OldLace against any other color in the contrast checker.
OldLace sits at 97% OKLCH lightness. Holding its hue and chroma and moving only that value carries it down to #090501, which keeps the family recognizable instead of letting it drift toward gray the way a plain HSL ramp does.
#C5BDAF
20% darker
#90897B
40% darker
#5E574B
60% darker
#312B1F
80% darker
#090501
100% darker
Build a full accessible scale from #FDF5E6 in the shade generator.
The biggest shift is under tritanopia, where #FDF5E6 reads as #FFF2F0, 7.5 CIEDE2000 units away. If OldLace is the only thing marking a state or a series, roughly one viewer in twelve will miss it.
Protanopia
#F9F4E5
Deuteranopia
#FBF7E6
Tritanopia
#FFF2F0
Achromatopsia
#F6F6F6
The nearest CSS keywords to #FDF5E6, ranked by perceptual distance rather than by how close their hex digits happen to look.