#5B51DD
Color Details
HEX
#5B51DD
RGB
rgb(91, 81, 221)
HSL
hsl(244, 67%, 59%)
CMYK
cmyk(59%, 63%, 0%, 13%)
Best text on this color
#FFFFFF (CR 5.73:1)
Determined by WCAG contrast ratio
Readability Previews
Monochrome
Analogous
Complementary Mix
About #5B51DD
#5B51DD converts to RGB(91, 81, 221) and HSL(244, 67%, 59%). 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).
#5B51DD FAQs
What is the RGB value of #5B51DD?
RGB: 91, 81, 221. Copy as CSS:
rgb(91, 81, 221)
Is #5B51DD a web-safe color?
No — not in the 216-color “web-safe” palette.
What is the complementary color of #5B51DD?
Complement: #d3dc50.
Does #5B51DD have good contrast on white or black?
On white: 5.73:1 (AA (normal text)).
On black: 3.67:1 (AA (large text)).