Color

#316eb4

#316eb4
hex#316eb4
rgbrgb(49, 110, 180)
hslhsl(212, 57%, 45%)
oklchoklch(0.533 0.127 253.9)
Closest name: Campanula (#3473b7)Relative luminance 0.151

Colors that go with #316eb4

Charcoal, Crimson and Sea 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 →

#b47731

#31b0b4 · #3631b4

#b4316e · #6eb431

Split-complementary

Open in tool →

#b43631 · #b0b431

#b431b0 · #b47731 · #31b436

Contrast

#316eb4 as textRatioAAAA largeAAAFix
Aaon white
5.22:1passpassfail
  • AAA: use #275890 as the text (7.28:1)
Aaon black
4.02:1failpassfail
  • AA: use #3576c0 as the text (4.5:1)
  • AAA: use #679ad5 as the text (7.16:1)
  • AA: or shift the background to #f0f0f0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #316eb4 as the background.

Brands using this color

Fonts for this mood

#316eb4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #316eb4
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 #316eb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/316eb4-9caac4-df564e-1f202d-e9f1f1?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