Color

#3112fd

#3112fd
hex#3112fd
rgbrgb(49, 18, 253)
hslhsl(248, 98%, 53%)
oklchoklch(0.469 0.298 270.2)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0818

Colors that go with #3112fd

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#ddfd12

#1268fd · #a612fd

#fd3112 · #12fd31

Split-complementary

Open in tool →

#fda612 · #68fd12

#fd1268 · #ddfd12 · #12fda6

Contrast

#3112fd as textRatioAAAA largeAAAFix
Aaon white
7.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.64:1failfailfail
  • AA: use #735dfd as the text (4.71:1)
  • AAA: use #9686fe as the text (7.14:1)
  • AA: or shift the background to #c4c4c4 (4.57:1)
  • AAA: or shift the background to #f2f2f2 (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 #3112fd as the background.

Brands using this color

Fonts for this mood

#3112fd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3112fd
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 #3112fd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3112fd-a69cc4-dfac4e-271f2d-e9ecf1?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