Inspect LightSteelBlue (#B0C4DE) in HEX, RGB, HSL, LCH and OKLCH, check its contrast, and copy the value you need.
LightSteelBlue
#B0C4DE
Black text reads best on this background, at 11.8:1.
LightSteelBlue is one of the 148 CSS named colors, and resolves to #B0C4DE in every browser. In numbers that is rgb(176, 196, 222) and hsl(214, 41%, 78%). Perceptually it is a light, muted color: OKLCH puts its lightness at 81% and its chroma at 0.043. It sits in the blues at 255 degrees of OKLCH hue, and reads as a cool color.
White text only reaches 1.78:1 here, so black text is the safer pairing at 11.8:1. That combination of lightness and chroma makes it a workable mid-tone, the kind of value that lands in the middle of a shade scale.
The closest CSS named colors to LightSteelBlue, measured with CIEDE2000, are LightSkyBlue (#87CEFA), LightBlue (#ADD8E6), Silver (#C0C0C0). If LightSteelBlue is not quite right, those are the nearest keywords to try before reaching for a custom value.
HEX
#B0C4DE
RGB
rgb(176, 196, 222)
HSL
hsl(214, 41%, 78%)
HWB
hwb(214 69% 13%)
CMYK
cmyk(21%, 12%, 0%, 13%)
LAB
lab(78.26 -2.9 -15.43)
LCH
lch(78.26 15.7 259.35)
OKLCH
oklch(81.36% 0.0428 255.03)
WCAG asks for 4.5:1 between body text and its background. On #B0C4DE white text measures 1.78:1 and black text 11.8:1, so black clears it and white does not.
White text on LightSteelBlue
WCAG 2.2
1.78:1
APCA
Lc 36
Fails AA body text
Fails AAA body text
Fails AA large text
Black text on LightSteelBlue
WCAG 2.2
11.8:1
APCA
Lc 71
Passes AA body text
Passes AAA body text
Passes AA large text
Check LightSteelBlue against any other color in the contrast checker.
LightSteelBlue sits at 81% OKLCH lightness. Holding its hue and chroma and moving only that value carries it up to #F4F9FF and down to #000514, which keeps the family recognizable instead of letting it drift toward gray the way a plain HSL ramp does.
#BBCFE9
20% lighter
#C5DAF4
40% lighter
#D0E4FF
60% lighter
#E2EFFF
80% lighter
#F4F9FF
100% lighter
#8598B1
20% darker
#5D6F87
40% darker
#37485E
60% darker
#152438
80% darker
#000514
100% darker
Build a full accessible scale from #B0C4DE in the shade generator.
Hues rotated around #B0C4DE 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.
LightSteelBlue sits at 255 degrees. Rotating it a half turn lands on 75 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 LightSteelBlue at 225 and 285 degrees. They stay close enough to read as the same family, which is what you want for hover states, secondary surfaces and gradients.
255, 15 and 135 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 75 degrees, this pair flanks it at 45 and 105. You keep most of the contrast of a complementary pairing while losing the harshness.
Explore more combinations around LightSteelBlue on the color wheel.
The biggest shift is under tritanopia, where #B0C4DE reads as #A6C9CC, 12.4 CIEDE2000 units away. If LightSteelBlue is the only thing marking a state or a series, roughly one viewer in twelve will miss it.
Protanopia
#BCC4DF
Deuteranopia
#B7C0DD
Tritanopia
#A6C9CC
Achromatopsia
#C2C2C2
The nearest CSS keywords to #B0C4DE, ranked by perceptual distance rather than by how close their hex digits happen to look.