Inspect Cornsilk (#FFF8DC) in HEX, RGB, HSL, LCH and OKLCH, check its contrast, and copy the value you need.
Cornsilk
#FFF8DC
Black text reads best on this background, at 19.71:1.
Cornsilk is one of the 148 CSS named colors, and resolves to #FFF8DC in every browser. In numbers that is rgb(255, 248, 220) and hsl(48, 100%, 93%). Perceptually it is a very light, near-neutral color: OKLCH puts its lightness at 98% and its chroma at 0.037. It sits in the yellows at 95 degrees of OKLCH hue, and reads as a neutral color.
White text only reaches 1.07:1 here, so black text is the safer pairing at 19.71:1. Because it is this light, Cornsilk works best as a page or card background with dark text over it.
The closest CSS named colors to Cornsilk, measured with CIEDE2000, are Beige (#F5F5DC), LightYellow (#FFFFE0), PapayaWhip (#FFEFD5). If Cornsilk is not quite right, those are the nearest keywords to try before reaching for a custom value.
HEX
#FFF8DC
RGB
rgb(255, 248, 220)
HSL
hsl(48, 100%, 93%)
HWB
hwb(48 86% 0%)
CMYK
cmyk(0%, 3%, 14%, 0%)
LAB
lab(97.58 -0.96 14.39)
LCH
lch(97.58 14.42 93.8)
OKLCH
oklch(97.73% 0.0373 95.44)
WCAG asks for 4.5:1 between body text and its background. On #FFF8DC white text measures 1.07:1 and black text 19.71:1, so black clears it and white does not.
White text on Cornsilk
WCAG 2.2
1.07:1
APCA
Lc 0
Fails AA body text
Fails AAA body text
Fails AA large text
Black text on Cornsilk
WCAG 2.2
19.71:1
APCA
Lc 101
Passes AA body text
Passes AAA body text
Passes AA large text
Check Cornsilk against any other color in the contrast checker.
Cornsilk sits at 98% OKLCH lightness. Holding its hue and chroma and moving only that value carries it down to #080600, which keeps the family recognizable instead of letting it drift toward gray the way a plain HSL ramp does.
#C7C0A5
20% darker
#918B71
40% darker
#5F5941
60% darker
#312C15
80% darker
#080600
100% darker
Build a full accessible scale from #FFF8DC in the shade generator.
Hues rotated around #FFF8DC in OKLCH, then pulled back into the sRGB gamut. Each swatch is labelled with the nearest CSS named color so you have a keyword to start from.
Cornsilk sits at 95 degrees. Rotating it a half turn lands on 275 degrees, the hue directly opposite. It is the strongest pairing you can make without changing lightness, and the one most likely to vibrate if you use both at full chroma.
The neighbors of Cornsilk at 65 and 125 degrees. They stay close enough to read as the same family, which is what you want for hover states, secondary surfaces and gradients.
95, 215 and 335 degrees divide the wheel into thirds. Balanced enough to carry a whole palette without one color dominating the other two.
Instead of the complement at 275 degrees, this pair flanks it at 245 and 305. You keep most of the contrast of a complementary pairing while losing the harshness.
Explore more combinations around Cornsilk on the color wheel.
The biggest shift is under tritanopia, where #FFF8DC reads as #FFF3F0, 11.9 CIEDE2000 units away. If Cornsilk is the only thing marking a state or a series, roughly one viewer in twelve will miss it.
Protanopia
#FFF6DB
Deuteranopia
#FFF9DD
Tritanopia
#FFF3F0
Achromatopsia
#F7F7F7
The nearest CSS keywords to #FFF8DC, ranked by perceptual distance rather than by how close their hex digits happen to look.