Color

#3161b9

#3161b9
hex#3161b9
rgbrgb(49, 97, 185)
hslhsl(219, 58%, 46%)
oklchoklch(0.507 0.149 261.3)
Closest name: Denim (#1560bd)Relative luminance 0.1271

Colors that go with #3161b9

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 →

#b98a31

#31a5b9 · #4631b9

#b93161 · #61b931

Split-complementary

Open in tool →

#b94631 · #a5b931

#b931a5 · #b98a31 · #31b946

Contrast

#3161b9 as textRatioAAAA largeAAAFix
Aaon white
5.93:1passpassfail
  • AAA: use #2c56a5 as the text (7.04:1)
Aaon black
3.54:1failpassfail
  • AA: use #4272cd as the text (4.52:1)
  • AAA: use #7296da as the text (7.09:1)
  • AA: or shift the background to #e3e3e3 (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 #3161b9 as the background.

Brands using this color

Fonts for this mood

#3161b9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3161b9
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 #3161b9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3161b9-9ca5c4-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