#3F4A6B
#6F7A9C
#C6CBDA
#F3F4F7
#6F7A9C is a medium, muted gray color, closest to Slate and near Slate and Steel Blue. In OKLCH it has 58% lightness and 0.05 chroma at hue 271°. Gray suggests neutrality and balance; it lets other colors lead, which makes #6F7A9C a natural choice for text, borders and interface chrome. It appears in 1 ColorSwoop palette.
#6F7A9Crgb(111, 122, 156)hsl(225, 19%, 52%)29, 22, 0, 39--slate4.25:1 white · 4.94:1 blackBlack text passes WCAG AA on #6F7A9C (4.94:1); white text does not (4.25:1).
For a calm scheme pair #6F7A9C with its analogous neighbors #6D909C and #796D9C; for contrast use its complement #9C906D as a small accent, and anchor everything with a neutral such as #1F1F24.
--slate: #6F7A9C;
$slate: #6F7A9C;
colors: { 'slate': '#6F7A9C' }