Color

#1873cd

#1873cd
hex#1873cd
rgbrgb(24, 115, 205)
hslhsl(210, 79%, 45%)
oklchoklch(0.554 0.161 253.3)
Closest name: Campanula (#3473b7)Relative luminance 0.1686

Colors that go with #1873cd

Charcoal, Crimson 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 →

#cd7318

#18cdcd · #1818cd

#cd1873 · #73cd18

Split-complementary

Open in tool →

#cd1818 · #cdcd18

#cd18cd · #cd7318 · #18cd18

Contrast

#1873cd as textRatioAAAA largeAAAFix
Aaon white
4.8:1passpassfail
  • AAA: use #1359a0 as the text (7.08:1)
Aaon black
4.37:1failpassfail
  • AA: use #1975d2 as the text (4.52:1)
  • AAA: use #4899ea as the text (7.02:1)
  • AA: or shift the background to #fafafa (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1873cd as the background.

Brands using this color

Fonts for this mood

#1873cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1873cd
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 #1873cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1873cd-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