Toolshed
HEX#3b82f6
RGBrgb(59, 130, 246)
HSLhsl(217.2 91.2% 59.8%)
OKLCHoklch(0.6231 0.188 259.81)
LABlab(54.62% 8.76 -65.79)

Contrast

White text
3.68:1AA Large
Black text
5.71:1AA

WCAG 2.1 asks for at least 4.5:1 for body text and 3:1 for large text. Best choice here is black.

Lightness scale

Stepped in OKLCH, so each step looks evenly spaced rather than merely being evenly numbered.