Color

#731dbf

#731dbf
hex#731dbf
rgbrgb(115, 29, 191)
hslhsl(272, 74%, 43%)
oklchoklch(0.465 0.225 301.4)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0829

Colors that go with #731dbf

Olive Green, Denim and Royal 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.

Real palettes that use #731dbf

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#68bf1d

#221dbf · #bf1db9

#bf731d · #1dbf73

Split-complementary

Open in tool →

#b9bf1d · #1dbf22

#bf221d · #68bf1d · #1db9bf

Contrast

#731dbf as textRatioAAAA largeAAAFix
Aaon white
7.9:1passpasspassPasses AAA — no fix needed.
Aaon black
2.66:1failfailfail
  • AA: use #9e4ee4 as the text (4.66:1)
  • AAA: use #b97eec as the text (7.26:1)
  • AA: or shift the background to #c4c4c4 (4.53:1)
  • AAA: or shift the background to #f2f2f2 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #731dbf 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

#731dbf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #731dbf
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 #731dbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/731dbf-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