Color

#605dbb

#605dbb
hex#605dbb
rgbrgb(96, 93, 187)
hslhsl(242, 41%, 55%)
oklchoklch(0.529 0.144 281.7)
Closest name: slateblue (#6a5acd)Relative luminance 0.139

Colors that go with #605dbb

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 →

#b8bb5d

#5d89bb · #8f5dbb

#bb605d · #5dbb60

Split-complementary

Open in tool →

#bb8f5d · #89bb5d

#bb5d89 · #b8bb5d · #5dbb8f

Contrast

#605dbb as textRatioAAAA largeAAAFix
Aaon white
5.55:1passpassfail
Aaon black
3.78:1failpassfail
  • AA: use #6e6cc1 as the text (4.58:1)
  • AAA: use #9290d0 as the text (7.12:1)
  • AA: or shift the background to #e8e8e8 (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 #605dbb as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/605dbb-a29cc4-df9e4e-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