Color

#518fc2

#518fc2
hex#518fc2
rgbrgb(81, 143, 194)
hslhsl(207, 48%, 54%)
oklchoklch(0.63 0.101 245.2)
Closest name: Canadian Tuxedo (#579aca)Relative luminance 0.2529

Colors that go with #518fc2

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 →

#c28451

#51c2bc · #5157c2

#c2518f · #8fc251

Split-complementary

Open in tool →

#c25157 · #c2bc51

#bc51c2 · #c28451 · #57c251

Contrast

#518fc2 as textRatioAAAA largeAAAFix
Aaon white
3.47:1failpassfail
  • AA: use #3d7bae as the text (4.52:1)
  • AAA: use #2d5b80 as the text (7.19:1)
  • AA: or shift the background to #212121 (4.64:1)
Aaon black
6.06:1passpassfail
  • AAA: use #649bc9 as the text (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 #518fc2 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

#518fc2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #518fc2
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 #518fc2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/518fc2-9cadc4-df4e53-1f212d-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