Color

#1d73bf

#1d73bf
hex#1d73bf
rgbrgb(29, 115, 191)
hslhsl(208, 74%, 43%)
oklchoklch(0.546 0.142 250.4)
Closest name: Campanula (#3473b7)Relative luminance 0.1628

Colors that go with #1d73bf

Charcoal, Crimson and Amber 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 →

#bf681d

#1dbfb9 · #1d22bf

#bf1d73 · #73bf1d

Split-complementary

Open in tool →

#bf1d22 · #bfb91d

#b91dbf · #bf681d · #22bf1d

Contrast

#1d73bf as textRatioAAAA largeAAAFix
Aaon white
4.93:1passpassfail
  • AAA: use #175b97 as the text (7.05:1)
Aaon black
4.26:1failpassfail
  • AA: use #1e78c8 as the text (4.58:1)
  • AAA: use #499ce4 as the text (7.16:1)
  • AA: or shift the background to #f5f5f5 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d73bf as the background.

Brands using this color

Fonts for this mood

#1d73bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d73bf
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 #1d73bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d73bf-9cadc4-df4e51-1f212d-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