#0D1B2A
#3C5374
#5A7A9E
#E0E1DD
#3C5374 is a medium, muted blue color, closest to Dusk and near Dusk and Peacock. In OKLCH it has 44% lightness and 0.06 chroma at hue 257°. Blue suggests trust, stability and calm; it is the most used hue in corporate and tech branding, which makes #3C5374 a natural choice for links, primary buttons, finance and technology. It appears in 1 ColorSwoop palette.
#3C5374rgb(60, 83, 116)hsl(215, 32%, 35%)48, 28, 0, 55--dusk7.83:1 white · 2.68:1 blackWhite text passes WCAG AA on #3C5374 (7.83:1); black does not, so keep dark text off it.
For a calm scheme pair #3C5374 with its analogous neighbors #3D7176 and #413D76; for contrast use its complement #765E3D as a small accent, and anchor everything with a neutral such as #F5F5F7.
--dusk: #3C5374;
$dusk: #3C5374;
colors: { 'dusk': '#3C5374' }