Color

#1245fd

#1245fd
hex#1245fd
rgbrgb(18, 69, 253)
hslhsl(227, 98%, 53%)
oklchoklch(0.508 0.272 264.6)
Closest name: C64 Blue (#003aff)Relative luminance 0.1148

Colors that go with #1245fd

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 →

#fdca12

#12bafd · #5412fd

#fd1245 · #45fd12

Split-complementary

Open in tool →

#fd5412 · #bafd12

#fd12ba · #fdca12 · #12fd54

Contrast

#1245fd as textRatioAAAA largeAAAFix
Aaon white
6.37:1passpassfail
  • AAA: use #0339fc as the text (7.01:1)
Aaon black
3.3:1failpassfail
  • AA: use #3f68fd as the text (4.61:1)
  • AAA: use #7290fe as the text (7.14:1)
  • AA: or shift the background to #d9d9d9 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1245fd as the background.

Brands using this color

Fonts for this mood

#1245fd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1245fd
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 #1245fd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1245fd-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