Color

#5136ab

#5136ab
hex#5136ab
rgbrgb(81, 54, 171)
hslhsl(254, 52%, 44%)
oklchoklch(0.437 0.177 287.3)
Closest name: Blueberry (#464196)Relative luminance 0.0733

Colors that go with #5136ab

Charcoal, Denim and Sea 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 →

#8fab36

#3655ab · #8b36ab

#ab5136 · #36ab51

Split-complementary

Open in tool →

#ab8b36 · #55ab36

#ab3655 · #8fab36 · #36ab8b

Contrast

#5136ab as textRatioAAAA largeAAAFix
Aaon white
8.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #7d64ce as the text (4.59:1)
  • AAA: use #9d8bda as the text (7.14:1)
  • AA: or shift the background to #bdbdbd (4.53:1)
  • AAA: or shift the background to #ebebeb (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5136ab 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

#5136ab reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5136ab
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 #5136ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5136ab-aa9cc4-dfbb4e-291f2d-e9ebf1?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