Color

#523f88

#523f88
hex#523f88
rgbrgb(82, 63, 136)
hslhsl(256, 37%, 39%)
oklchoklch(0.425 0.117 292.7)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0713

Colors that go with #523f88

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 →

#75883f

#3f5088 · #773f88

#88523f · #3f8852

Split-complementary

Open in tool →

#88773f · #50883f

#883f50 · #75883f · #3f8877

Contrast

#523f88 as textRatioAAAA largeAAAFix
Aaon white
8.66:1passpasspassPasses AAA — no fix needed.
Aaon black
2.43:1failfailfail
  • AA: use #7e69ba as the text (4.62:1)
  • AAA: use #9c8cca as the text (7.02:1)
  • AA: or shift the background to #bdbdbd (4.61:1)
  • AAA: or shift the background to #e8e8e8 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #523f88 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

#523f88 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #523f88
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 #523f88 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/523f88-ab9cc4-dfbf4e-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