Color

#3118ec

#3118ec
hex#3118ec
rgbrgb(49, 24, 236)
hslhsl(247, 85%, 51%)
oklchoklch(0.451 0.279 271.1)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0736

Colors that go with #3118ec

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 →

#d3ec18

#1869ec · #9b18ec

#ec3118 · #18ec31

Split-complementary

Open in tool →

#ec9b18 · #69ec18

#ec1869 · #d3ec18 · #18ec9b

Contrast

#3118ec as textRatioAAAA largeAAAFix
Aaon white
8.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #705ff2 as the text (4.61:1)
  • AAA: use #9689f5 as the text (7.19:1)
  • AA: or shift the background to #bdbdbd (4.52:1)
  • AAA: or shift the background to #ebebeb (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 #3118ec as the background.

Brands using this color

Fonts for this mood

#3118ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3118ec
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 #3118ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3118ec-a59cc4-dfaa4e-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