#2D00F7
#00F5D4
#F9F871
#111111
#2D00F7 is a medium, highly saturated blue color, closest to Ultramarine and near Ultramarine and Neon Blue. In OKLCH it has 45% lightness and 0.30 chroma at hue 270°. Blue suggests trust, stability and calm; it is the most used hue in corporate and tech branding, which makes #2D00F7 a natural choice for links, primary buttons, finance and technology. It appears in 1 ColorSwoop palette.
#2D00F7rgb(45, 0, 247)hsl(251, 100%, 48%)82, 100, 0, 3--ultramarine8.56:1 white · 2.45:1 blackWhite text passes WCAG AA on #2D00F7 (8.56:1); black does not, so keep dark text off it.
For a calm scheme pair #2D00F7 with its analogous neighbors #004EF5 and #A700F5; for contrast use its complement #C8F500 as a small accent, and anchor everything with a neutral such as #F5F5F7.
--ultramarine: #2D00F7;
$ultramarine: #2D00F7;
colors: { 'ultramarine': '#2D00F7' }