#0F172A
#444F64
#6366F1
#F8FAFC
#444F64 is a medium, muted gray color, closest to Graphite and near Graphite and Charcoal. In OKLCH it has 43% lightness and 0.04 chroma at hue 263°. Gray suggests neutrality and balance; it lets other colors lead, which makes #444F64 a natural choice for text, borders and interface chrome. It appears in 2 ColorSwoop palettes.
#444F64rgb(68, 79, 100)hsl(219, 19%, 33%)32, 21, 0, 61--graphite8.24:1 white · 2.55:1 blackWhite text passes WCAG AA on #444F64 (8.24:1); black does not, so keep dark text off it.
For a calm scheme pair #444F64 with its analogous neighbors #445F64 and #494464; for contrast use its complement #645944 as a small accent, and anchor everything with a neutral such as #F5F5F7.
--graphite: #444F64;
$graphite: #444F64;
colors: { 'graphite': '#444F64' }