There is rarely one right answer. Here are several categories of pairing options, each with a reason it may work.
Crimson
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Cadmium Red
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Alizarin Crimson
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Firebrick
Similar lightness for a subtle, tone-on-tone pairing with minimal contrast.
Indian Red
Enough lightness contrast to read as two distinct colours without feeling harsh.
Vivid Coral
Enough lightness contrast to read as two distinct colours without feeling harsh.
Burgundy
Enough lightness contrast to read as two distinct colours without feeling harsh.
Maroon
Enough lightness contrast to read as two distinct colours without feeling harsh.
White
Strong lightness contrast and saturation for a bold, graphic pairing.
Mint Cream
Strong lightness contrast and saturation for a bold, graphic pairing.
Off-White
Strong lightness contrast and saturation for a bold, graphic pairing.
Ivory
Strong lightness contrast and saturation for a bold, graphic pairing.
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.
Graphite
A low-chroma neutral lets the original colour stay the visual focus.
Silver
A low-chroma neutral lets the original colour stay the visual focus.
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.
White
Meets WCAG AA contrast (5.5:1) for normal text if used as text/background.
Ivory
Meets WCAG AA contrast (5.5:1) for normal text if used as text/background.
Mint Cream
Meets WCAG AA contrast (5.4:1) for normal text if used as text/background.
Azure
Meets WCAG AA contrast (5.4:1) for normal text if used as text/background.