Color

#3473b2

#3473b2
hex#3473b2
rgbrgb(52, 115, 178)
hslhsl(210, 55%, 45%)
oklchoklch(0.545 0.118 250.9)
Closest name: Campanula (#3473b7)Relative luminance 0.1621

Colors that go with #3473b2

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 →

#b27334

#34b2b2 · #3434b2

#b23473 · #73b234

Split-complementary

Open in tool →

#b23434 · #b2b234

#b234b2 · #b27334 · #34b234

Contrast

#3473b2 as textRatioAAAA largeAAAFix
Aaon white
4.95:1passpassfail
  • AAA: use #28598a as the text (7.28:1)
Aaon black
4.24:1failpassfail
  • AA: use #3678ba as the text (4.55:1)
  • AAA: use #659cd2 as the text (7.24:1)
  • AA: or shift the background to #f5f5f5 (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 #3473b2 as the background.

Brands using this color

Fonts for this mood

#3473b2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3473b2
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 #3473b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3473b2-9cabc4-df514e-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