Color

#5c18aa

#5c18aa
hex#5c18aa
rgbrgb(92, 24, 170)
hslhsl(268, 75%, 38%)
oklchoklch(0.414 0.205 296.9)
Closest name: Intergalactic Settlement (#5b1e8b)Relative luminance 0.0583

Colors that go with #5c18aa

Olive Green, Charcoal and Crimson 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 →

#66aa18

#181daa · #a518aa

#aa5c18 · #18aa5c

Split-complementary

Open in tool →

#aaa518 · #1daa18

#aa181d · #66aa18 · #18aaa5

Contrast

#5c18aa as textRatioAAAA largeAAAFix
Aaon white
9.69:1passpasspassPasses AAA — no fix needed.
Aaon black
2.17:1failfailfail
  • AA: use #9751e6 as the text (4.64:1)
  • AAA: use #b17eed as the text (7.08:1)
  • AA: or shift the background to #b3b3b3 (4.62:1)
  • AAA: or shift the background to #dbdbdb (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5c18aa 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

#5c18aa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5c18aa
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 #5c18aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5c18aa-b39cc4-dfdc4e-2c1f2d-e9eaf1?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