#5B51E7
Color Details
HEX
#5B51E7
RGB
rgb(91, 81, 231)
HSL
hsl(244, 76%, 61%)
CMYK
cmyk(61%, 65%, 0%, 9%)
Best text on this color
#FFFFFF (CR 5.56:1)
Determined by WCAG contrast ratio
Readability Previews
Monochrome
Analogous
Complementary Mix
About #5B51E7
#5B51E7 converts to RGB(91, 81, 231) and HSL(244, 76%, 61%). This page provides quick readability checks, related hues (complementary and analogous), and ready-made palettes so you can drop the color into UI components, images, or CSS immediately.
Tip: Use the “Best text” chip above as a safe default foreground on this color (chosen by contrast ratio).
#5B51E7 FAQs
What is the RGB value of #5B51E7?
RGB: 91, 81, 231. Copy as CSS:
rgb(91, 81, 231)
Is #5B51E7 a web-safe color?
No — not in the 216-color “web-safe” palette.
What is the complementary color of #5B51E7?
Complement: #dde750.
Does #5B51E7 have good contrast on white or black?
On white: 5.56:1 (AA (normal text)).
On black: 3.78:1 (AA (large text)).