#370FB7 Hex Color
Dark indigo with a violet pull
Closer to midnight than plain navy, this dark indigo leans hard into violet. The hex code #370fb7 is heavily saturated and very dark, which makes it a strong dominant base for dark mode UIs and moody brand palettes. White text reads clearly on it at about 11:1 contrast, well past AA. It flatters warm accents like amber and gold, and pairs naturally with other shades of blue.
Questions about #370fb7
What is #370fb7 in RGB, HSL and CMYK?
In RGB, #370fb7 is rgb(55, 15, 183), in HSL hsl(254, 85%, 39%) and in CMYK 70%, 92%, 0%, 28%.
What colors pair well with #370fb7?
Warm golds and ambers give #370fb7 the strongest contrast in feel, since its violet undertone turns flat next to cool grays. Muted coral also works as a small accent.
Is #370fb7 readable on white or black?
#370fb7 has a 10.96:1 contrast ratio on white and 1.91:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it is too faint for text. Try other pairs in the contrast checker.