Color

#516ba4

#516ba4
hex#516ba4
rgbrgb(81, 107, 164)
hslhsl(221, 34%, 48%)
oklchoklch(0.533 0.095 264.7)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1495

Colors that go with #516ba4

Charcoal, Sea Green and Dark Olive Green 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 →

#a48a51

#5195a4 · #6051a4

#a4516b · #6ba451

Split-complementary

Open in tool →

#a46051 · #95a451

#a45195 · #a48a51 · #51a460

Contrast

#516ba4 as textRatioAAAA largeAAAFix
Aaon white
5.26:1passpassfail
  • AAA: use #425785 as the text (7.16:1)
Aaon black
3.99:1failpassfail
  • AA: use #5b75ae as the text (4.6:1)
  • AAA: use #8195c1 as the text (7:1)
  • AA: or shift the background to #f0f0f0 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516ba4 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 #516ba4
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 #516ba4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516ba4-9ca4c4-df6b4e-211f2d-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