Color

#56178c

#56178c
hex#56178c
rgbrgb(86, 23, 140)
hslhsl(272, 72%, 32%)
oklchoklch(0.378 0.176 302.7)
Closest name: Intergalactic Settlement (#5b1e8b)Relative luminance 0.0448

Colors that go with #56178c

Royal Blue, Olive Green and Charcoal 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 →

#4e8c17

#1b178c · #8c1788

#8c5617 · #178c56

Split-complementary

Open in tool →

#888c17 · #178c1b

#8c1b17 · #4e8c17 · #17888c

Contrast

#56178c as textRatioAAAA largeAAAFix
Aaon white
11.07:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #9e50e2 as the text (4.7:1)
  • AAA: use #b67bea as the text (7.01:1)
  • AA: or shift the background to #a6a6a6 (4.55:1)
  • AAA: or shift the background to #cfcfcf (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #56178c 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

#56178c reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #56178c
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 #56178c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/56178c-b69cc4-c5cb62-2d1f2d-eae9f1?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