Color

#1313ec

#1313ec
hex#1313ec
rgbrgb(19, 19, 236)
hslhsl(240, 85%, 50%)
oklchoklch(0.437 0.288 265.7)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0666

Colors that go with #1313ec

Charcoal, Crimson and Cobalt 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 →

#ecec13

#1380ec · #8013ec

#ec1313 · #13ec13

Split-complementary

Open in tool →

#ec8013 · #80ec13

#ec1380 · #ecec13 · #13ec80

Contrast

#1313ec as textRatioAAAA largeAAAFix
Aaon white
9:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #6363f2 as the text (4.6:1)
  • AAA: use #8e8ef6 as the text (7.35:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1313ec as the background.

Brands using this color

Fonts for this mood

#1313ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1313ec
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 #1313ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1313ec-a19cc4-df994e-251f2d-e9edf1?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