#3B51CB

Color Details

HEX
#3B51CB
RGB
rgb(59, 81, 203)
HSL
hsl(231, 58%, 51%)
CMYK
cmyk(71%, 60%, 0%, 20%)
Best text on this color #FFFFFF (CR 6.51:1) Determined by WCAG contrast ratio

Readability Previews

Black on #3b51cb
Contrast 3.23:1 Fail
White on #3b51cb
Contrast 6.51:1 AA
#3b51cb on Black
Contrast 3.23:1 Fail
#3b51cb on White
Contrast 6.51:1 AA

Tints & Shades

#6274d5
#8997e0
#b1b9ea
#2f41a2
#23317a
#182051

Complement & Analogous

#cbb53a
#6c3acb
#3a98cb

Triadic

#cb3a4f
#4fcb3a

Monochrome

#182051 #23317a #3b51cb #8997e0 #b1b9ea #d8dcf5

Analogous

#3a98cb #75b7db #3b51cb #8961d5 #6c3acb #562ea2

Complementary Mix

#23317a #3b51cb #8997e0 #cbb53a #ddcf7f #847626

Nearby Colors

#3b51ca
#3b51cc
#3b51bb
#3b51db

Embed #3B51CB swatch

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About #3B51CB

#3B51CB converts to RGB(59, 81, 203) and HSL(231, 58%, 51%). 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).

#3B51CB FAQs

What is the RGB value of #3B51CB?
RGB: 59, 81, 203. Copy as CSS: rgb(59, 81, 203)
Is #3B51CB a web-safe color?
No — not in the 216-color “web-safe” palette.
What is the complementary color of #3B51CB?
Complement: #cbb53a.
Does #3B51CB have good contrast on white or black?
On white: 6.51:1 (AA (normal text)). On black: 3.23:1 (AA (large text)).