Color

#5373df

#5373df
hex#5373df
rgbrgb(83, 115, 223)
hslhsl(226, 69%, 60%)
oklchoklch(0.587 0.168 268.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1943

Colors that go with #5373df

Charcoal, Sea Green 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 →

#dfbf53

#53badf · #7853df

#df5373 · #73df53

Split-complementary

Open in tool →

#df7853 · #badf53

#df53ba · #dfbf53 · #53df78

Contrast

#5373df as textRatioAAAA largeAAAFix
Aaon white
4.3:1failpassfail
  • AA: use #4a6cde as the text (4.68:1)
  • AAA: use #254ccb as the text (7.06:1)
  • AA: or shift the background to #0d0d0d (4.52:1)
Aaon black
4.89:1passpassfail
  • AAA: use #7993e6 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5373df as the background.

Brands using this color

Fonts for this mood

#5373df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5373df
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 #5373df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5373df-9ca1c4-df774e-221f2d-e9eff1?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