Color

#533b81

#533b81
hex#533b81
rgbrgb(83, 59, 129)
hslhsl(261, 37%, 37%)
oklchoklch(0.414 0.114 297)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0655

Colors that go with #533b81

Charcoal, Steel Blue and 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#69813b

#3b4681 · #773b81

#81543b · #3b8154

Split-complementary

Open in tool →

#81773b · #46813b

#813b46 · #69813b · #3b8177

Contrast

#533b81 as textRatioAAAA largeAAAFix
Aaon white
9.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.31:1failfailfail
  • AA: use #8265b8 as the text (4.5:1)
  • AAA: use #a28cca as the text (7.14:1)
  • AA: or shift the background to #b8b8b8 (4.58:1)
  • AAA: or shift the background to #e3e3e3 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #533b81 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

#533b81 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #533b81
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 #533b81 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/533b81-af9cc4-dfcb4e-2a1f2d-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