Color

#517ec2

#517ec2
hex#517ec2
rgbrgb(81, 126, 194)
hslhsl(216, 48%, 54%)
oklchoklch(0.592 0.116 258.4)
Closest name: Flood (#6677bb)Relative luminance 0.2057

Colors that go with #517ec2

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 →

#c29551

#51b7c2 · #5d51c2

#c2517e · #7ec251

Split-complementary

Open in tool →

#c25d51 · #b7c251

#c251b7 · #c29551 · #51c25d

Contrast

#517ec2 as textRatioAAAA largeAAAFix
Aaon white
4.11:1failpassfail
  • AA: use #4676be as the text (4.57:1)
  • AAA: use #32588f as the text (7.17:1)
  • AA: or shift the background to #121212 (4.56:1)
Aaon black
5.11:1passpassfail
  • AAA: use #7398ce 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 #517ec2 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

#517ec2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #517ec2
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 #517ec2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/517ec2-9ca7c4-df5f4e-201f2d-e9f0f1?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