There is rarely one right answer. Here are several categories of pairing options, each with a reason it may work.
Terracotta
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Tomato
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Coral
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Salmon
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Burnt Orange
Enough lightness contrast to read as two distinct colours without feeling harsh.
Ochre
Enough lightness contrast to read as two distinct colours without feeling harsh.
Copper
Enough lightness contrast to read as two distinct colours without feeling harsh.
Cadmium Red
Enough lightness contrast to read as two distinct colours without feeling harsh.
Prussian Blue
Strong lightness contrast and saturation for a bold, graphic pairing.
Tyrian Purple
Strong lightness contrast and saturation for a bold, graphic pairing.
Cinnamon
Strong lightness contrast and saturation for a bold, graphic pairing.
Burgundy
Strong lightness contrast and saturation for a bold, graphic pairing.
Lime
A saturated accent from a different hue family for a deliberate pop of contrast.
Spring Green
A saturated accent from a different hue family for a deliberate pop of contrast.
Chartreuse
A saturated accent from a different hue family for a deliberate pop of contrast.
Lime Green
A saturated accent from a different hue family for a deliberate pop of contrast.
Black
Meets WCAG AA contrast (7.1:1) for normal text if used as text/background.
Navy Blue
Meets WCAG AA contrast (5.4:1) for normal text if used as text/background.
Midnight Blue
Meets WCAG AA contrast (5.0:1) for normal text if used as text/background.
Prussian Blue
Meets WCAG AA contrast (4.5:1) for normal text if used as text/background.