There is rarely one right answer. Here are several categories of pairing options, each with a reason it may work.
Tan
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Peru
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Ecru
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Naples Yellow
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Nude
Enough lightness contrast to read as two distinct colours without feeling harsh.
Caramel
Enough lightness contrast to read as two distinct colours without feeling harsh.
Dark Goldenrod
Enough lightness contrast to read as two distinct colours without feeling harsh.
Topaz
Enough lightness contrast to read as two distinct colours without feeling harsh.
Silver
A low-chroma neutral lets the original colour stay the visual focus.
Grey
A low-chroma neutral lets the original colour stay the visual focus.
Taupe Grey
A low-chroma neutral lets the original colour stay the visual focus.
Ash Grey
A low-chroma neutral lets the original colour stay the visual focus.
Navy Blue
A saturated accent from a different hue family for a deliberate pop of contrast.
Midnight Blue
A saturated accent from a different hue family for a deliberate pop of contrast.
Indigo
A saturated accent from a different hue family for a deliberate pop of contrast.
Blue
A saturated accent from a different hue family for a deliberate pop of contrast.
Black
Meets WCAG AA contrast (8.1:1) for normal text if used as text/background.
Navy Blue
Meets WCAG AA contrast (6.2:1) for normal text if used as text/background.
Midnight Blue
Meets WCAG AA contrast (5.7:1) for normal text if used as text/background.
Prussian Blue
Meets WCAG AA contrast (5.2:1) for normal text if used as text/background.