Color

#634fc4

#634fc4
hex#634fc4
rgbrgb(99, 79, 196)
hslhsl(250, 50%, 54%)
oklchoklch(0.512 0.175 286.3)
Closest name: slateblue (#6a5acd)Relative luminance 0.1223

Colors that go with #634fc4

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 →

#b1c44f

#4f76c4 · #9d4fc4

#c4634f · #4fc463

Split-complementary

Open in tool →

#c49d4f · #76c44f

#c44f76 · #b1c44f · #4fc49d

Contrast

#634fc4 as textRatioAAAA largeAAAFix
Aaon white
6.09:1passpassfail
  • AAA: use #5540bf as the text (7.31:1)
Aaon black
3.45:1failpassfail
  • AA: use #7766cc as the text (4.56:1)
  • AAA: use #998cd9 as the text (7.11:1)
  • AA: or shift the background to #dedede (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #634fc4 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

#634fc4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #634fc4
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 #634fc4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/634fc4-a79cc4-dfb14e-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