#F5F3EE
#DDD8CF
#9AA39B
#3A3F3C
#3A3F3C is a dark, nearly neutral gray color, closest to Iron and near Iron and Onyx. In OKLCH it has 36% lightness and 0.01 chroma at hue 160°. Gray suggests neutrality and balance; it lets other colors lead, which makes #3A3F3C a natural choice for text, borders and interface chrome. It appears in 1 ColorSwoop palette.
#3A3F3Crgb(58, 63, 60)hsl(144, 4%, 24%)8, 0, 5, 75--iron10.74:1 white · 1.96:1 blackWhite text passes WCAG AA on #3A3F3C (10.74:1); black does not, so keep dark text off it.
For a calm scheme pair #3A3F3C with its analogous neighbors #3B403B and #3B403F; for contrast use its complement #403B3E as a small accent, and anchor everything with a neutral such as #F5F5F7.
--iron: #3A3F3C;
$iron: #3A3F3C;
colors: { 'iron': '#3A3F3C' }