Color

#516a9a

#516a9a
hex#516a9a
rgbrgb(81, 106, 154)
hslhsl(219, 31%, 46%)
oklchoklch(0.525 0.082 262.8)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1439

Colors that go with #516a9a

Charcoal, Sea Green and Sienna 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 →

#9a8051

#518f9a · #5c519a

#9a516a · #6a9a51

Split-complementary

Open in tool →

#9a5c51 · #8f9a51

#9a518f · #9a8051 · #519a5c

Contrast

#516a9a as textRatioAAAA largeAAAFix
Aaon white
5.42:1passpassfail
  • AAA: use #43587f as the text (7.14:1)
Aaon black
3.88:1failpassfail
  • AA: use #5b76a9 as the text (4.61:1)
  • AAA: use #8398be as the text (7.2:1)
  • AA: or shift the background to #ebebeb (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516a9a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #516a9a
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 #516a9a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516a9a-9ca5c4-df664e-211f2d-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