Color

#51167e

#51167e
hex#51167e
rgbrgb(81, 22, 126)
hslhsl(274, 70%, 29%)
oklchoklch(0.358 0.161 304.9)
Closest name: Indigo Static (#4b0183)Relative luminance 0.0383

Colors that go with #51167e

Crimson, Tomato and Olive Green 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 →

#437e16

#1d167e · #7e1677

#7e5116 · #167e51

Split-complementary

Open in tool →

#777e16 · #167e1d

#7e1d16 · #437e16 · #16777e

Contrast

#51167e as textRatioAAAA largeAAAFix
Aaon white
11.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.77:1failfailfail
  • AA: use #a04de0 as the text (4.63:1)
  • AAA: use #ba7de8 as the text (7.19:1)
  • AA: or shift the background to #a1a1a1 (4.6:1)
  • AAA: or shift the background to #c7c7c7 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51167e 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

#51167e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51167e
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 #51167e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51167e-b79cc4-c2cb62-2d1f2d-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