Color

#1849fb

#1849fb
hex#1849fb
rgbrgb(24, 73, 251)
hslhsl(227, 97%, 54%)
oklchoklch(0.513 0.265 264.9)
Closest name: C64 Blue (#003aff)Relative luminance 0.1192

Colors that go with #1849fb

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 →

#fbca18

#18bbfb · #5818fb

#fb1849 · #49fb18

Split-complementary

Open in tool →

#fb5818 · #bbfb18

#fb18bb · #fbca18 · #18fb58

Contrast

#1849fb as textRatioAAAA largeAAAFix
Aaon white
6.2:1passpassfail
  • AAA: use #0439fb as the text (7.04:1)
Aaon black
3.38:1failpassfail
  • AA: use #4069fc as the text (4.64:1)
  • AAA: use #7290fd as the text (7.12:1)
  • AA: or shift the background to #dedede (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1849fb as the background.

Brands using this color

Fonts for this mood

#1849fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1849fb
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 #1849fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1849fb-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