Color

#634bc3

#634bc3
hex#634bc3
rgbrgb(99, 75, 195)
hslhsl(252, 50%, 53%)
oklchoklch(0.505 0.179 287.4)
Closest name: slateblue (#6a5acd)Relative luminance 0.1162

Colors that go with #634bc3

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 →

#abc34b

#4b6fc3 · #9f4bc3

#c3634b · #4bc363

Split-complementary

Open in tool →

#c39f4b · #6fc34b

#c34b6f · #abc34b · #4bc39f

Contrast

#634bc3 as textRatioAAAA largeAAAFix
Aaon white
6.32:1passpassfail
  • AAA: use #5940bf as the text (7.22:1)
Aaon black
3.32:1failpassfail
  • AA: use #7a66cc as the text (4.6:1)
  • AAA: use #9c8cd9 as the text (7.17:1)
  • AA: or shift the background to #dbdbdb (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #634bc3 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#634bc3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #634bc3
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 #634bc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/634bc3-a99cc4-dfb64e-281f2d-e9ecf1?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