Color

#1843dc

#1843dc
hex#1843dc
rgbrgb(24, 67, 220)
hslhsl(227, 80%, 48%)
oklchoklch(0.472 0.235 265)
Closest name: C64 Blue (#003aff)Relative luminance 0.0938

Colors that go with #1843dc

Charcoal, Sea Green 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 →

#dcb218

#18a5dc · #5018dc

#dc1843 · #43dc18

Split-complementary

Open in tool →

#dc5018 · #a5dc18

#dc18a5 · #dcb218 · #18dc50

Contrast

#1843dc as textRatioAAAA largeAAAFix
Aaon white
7.3:1passpasspassPasses AAA — no fix needed.
Aaon black
2.88:1failfailfail
  • AA: use #476beb as the text (4.57:1)
  • AAA: use #7590f0 as the text (7:1)
  • AA: or shift the background to #cccccc (4.55:1)
  • AAA: or shift the background to #fcfcfc (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1843dc as the background.

Brands using this color

Fonts for this mood

#1843dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1843dc
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 #1843dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1843dc-9ca0c4-df7a4e-221f2d-e9eff1?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