Color

#605bbe

#605bbe
hex#605bbe
rgbrgb(96, 91, 190)
hslhsl(243, 43%, 55%)
oklchoklch(0.527 0.151 282.2)
Closest name: slateblue (#6a5acd)Relative luminance 0.1369

Colors that go with #605bbe

Charcoal, Amber and Blue 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 →

#b9be5b

#5b87be · #915bbe

#be605b · #5bbe60

Split-complementary

Open in tool →

#be915b · #87be5b

#be5b87 · #b9be5b · #5bbe91

Contrast

#605bbe as textRatioAAAA largeAAAFix
Aaon white
5.62:1passpassfail
  • AAA: use #4e49b6 as the text (7.11:1)
Aaon black
3.74:1failpassfail
  • AA: use #726dc5 as the text (4.71:1)
  • AAA: use #918ed2 as the text (7:1)
  • AA: or shift the background to #e6e6e6 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #605bbe as the background.

Brands using this color

Fonts for this mood

#605bbe reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #605bbe
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 #605bbe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/605bbe-a39cc4-dfa04e-261f2d-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