Color

#518dc2

#518dc2
hex#518dc2
rgbrgb(81, 141, 194)
hslhsl(208, 48%, 54%)
oklchoklch(0.625 0.102 246.9)
Closest name: steelblue (#4682b4)Relative luminance 0.2469

Colors that go with #518dc2

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 →

#c28651

#51c2be · #5155c2

#c2518d · #8dc251

Split-complementary

Open in tool →

#c25155 · #c2be51

#be51c2 · #c28651 · #55c251

Contrast

#518dc2 as textRatioAAAA largeAAAFix
Aaon white
3.54:1failpassfail
  • AA: use #3d79ae as the text (4.62:1)
  • AAA: use #2e5c84 as the text (7.05:1)
  • AA: or shift the background to #212121 (4.55:1)
Aaon black
5.94:1passpassfail
  • AAA: use #649ac9 as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #518dc2 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

#518dc2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #518dc2
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 #518dc2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/518dc2-9cadc4-df4e51-1f212d-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