#0A0A0A
#3D3D3D
#CCFF00
#FFFFFF
#0A0A0A is a dark, nearly neutral black color, closest to Obsidian and near Obsidian and Licorice. In OKLCH it has 14% lightness and 0.00 chroma at hue 0°. Black suggests sophistication, contrast and drama, which makes #0A0A0A a natural choice for text, luxury branding and dark interfaces. It appears in 5 ColorSwoop palettes.
#0A0A0Argb(10, 10, 10)hsl(0, 0%, 4%)0, 0, 0, 96--obsidian19.8:1 white · 1.06:1 blackWhite text passes WCAG AA on #0A0A0A (19.8:1); black does not, so keep dark text off it.
For a calm scheme pair #0A0A0A with its analogous neighbors #0A0A0A and #0A0A0A; for contrast use its complement #0A0A0A as a small accent, and anchor everything with a neutral such as #F5F5F7.
--obsidian: #0A0A0A;
$obsidian: #0A0A0A;
colors: { 'obsidian': '#0A0A0A' }