Color

#654bc3

#654bc3
hex#654bc3
rgbrgb(101, 75, 195)
hslhsl(253, 50%, 53%)
oklchoklch(0.507 0.179 288.3)
Closest name: slateblue (#6a5acd)Relative luminance 0.1174

Colors that go with #654bc3

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 →

#a9c34b

#4b6dc3 · #a14bc3

#c3654b · #4bc365

Split-complementary

Open in tool →

#c3a14b · #6dc34b

#c34b6d · #a9c34b · #4bc3a1

Contrast

#654bc3 as textRatioAAAA largeAAAFix
Aaon white
6.27:1passpassfail
  • AAA: use #5b40bf as the text (7.17:1)
Aaon black
3.35:1failpassfail
  • AA: use #7c66cc as the text (4.63:1)
  • AAA: use #9d8cd9 as the text (7.19:1)
  • AA: or shift the background to #dbdbdb (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 #654bc3 as the background.

Brands using this color

Fonts for this mood

#654bc3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #654bc3
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 #654bc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/654bc3-a99cc4-dfb84e-281f2d-e9ebf1?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