Color

#5381ac

#5381ac
hex#5381ac
rgbrgb(83, 129, 172)
hslhsl(209, 35%, 50%)
oklchoklch(0.588 0.083 247.8)
Closest name: steelblue (#4682b4)Relative luminance 0.2052

Colors that go with #5381ac

Charcoal, Copper and Amber 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 #5381ac

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ac7e53

#53acab · #5354ac

#ac5381 · #81ac53

Split-complementary

Open in tool →

#ac5354 · #acab53

#ab53ac · #ac7e53 · #54ac53

Contrast

#5381ac as textRatioAAAA largeAAAFix
Aaon white
4.11:1failpassfail
  • AA: use #4e79a2 as the text (4.58:1)
  • AAA: use #3a5a78 as the text (7.21:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #759abd as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5381ac 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

#5381ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5381ac
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 #5381ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5381ac-9cacc4-df4e4e-1f212d-e9f1f1?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