Color

#5f63bf

#5f63bf
hex#5f63bf
rgbrgb(95, 99, 191)
hslhsl(238, 43%, 56%)
oklchoklch(0.542 0.141 278.7)
Closest name: slateblue (#6a5acd)Relative luminance 0.1512

Colors that go with #5f63bf

Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#bfbc5f

#5f92bf · #8c5fbf

#bf5f62 · #62bf5f

Split-complementary

Open in tool →

#bf8c5f · #92bf5f

#bf5f92 · #bfbc5f · #5fbf8c

Contrast

#5f63bf as textRatioAAAA largeAAAFix
Aaon white
5.22:1passpassfail
  • AAA: use #494cb6 as the text (7.02:1)
Aaon black
4.02:1failpassfail
  • AA: use #696cc3 as the text (4.53:1)
  • AAA: use #8e90d2 as the text (7.07:1)
  • AA: or shift the background to #f0f0f0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5f63bf as the background.

Brands using this color

Fonts for this mood

#5f63bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5f63bf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #5f63bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5f63bf-9f9cc4-df944e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md