Color

#516cc8

#516cc8
hex#516cc8
rgbrgb(81, 108, 200)
hslhsl(226, 52%, 55%)
oklchoklch(0.557 0.146 269)
Closest name: God of Rain (#4466cc)Relative luminance 0.1664

Colors that go with #516cc8

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 →

#c8ac51

#51a8c8 · #7051c8

#c8516c · #6cc851

Split-complementary

Open in tool →

#c87051 · #a8c851

#c851a8 · #c8ac51 · #51c870

Contrast

#516cc8 as textRatioAAAA largeAAAFix
Aaon white
4.85:1passpassfail
  • AAA: use #3651ab as the text (7.19:1)
Aaon black
4.33:1failpassfail
  • AA: use #5470c9 as the text (4.54:1)
  • AAA: use #7f94d7 as the text (7.12:1)
  • AA: or shift the background to #f7f7f7 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516cc8 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

#516cc8 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #516cc8
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 #516cc8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516cc8-9ca1c4-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