Color

#5291cb

#5291cb
hex#5291cb
rgbrgb(82, 145, 203)
hslhsl(209, 54%, 56%)
oklchoklch(0.639 0.109 248.1)
Closest name: Canadian Tuxedo (#579aca)Relative luminance 0.2636

Colors that go with #5291cb

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb8d52

#52cbc9 · #5254cb

#cb5291 · #91cb52

Split-complementary

Open in tool →

#cb5254 · #cbc952

#c952cb · #cb8d52 · #54cb52

Contrast

#5291cb as textRatioAAAA largeAAAFix
Aaon white
3.35:1failpassfail
  • AA: use #377ab9 as the text (4.52:1)
  • AAA: use #295b89 as the text (7.11:1)
  • AA: or shift the background to #262626 (4.52:1)
Aaon black
6.27:1passpassfail
  • AAA: use #629bd0 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5291cb as the background.

Brands using this color

Fonts for this mood

#5291cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5291cb
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 #5291cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5291cb-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