Color

#290ef1

#290ef1
hex#290ef1
rgbrgb(41, 14, 241)
hslhsl(247, 89%, 50%)
oklchoklch(0.449 0.29 269.1)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0714

Colors that go with #290ef1

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 →

#d6f10e

#0e65f1 · #9a0ef1

#f1290e · #0ef129

Split-complementary

Open in tool →

#f19a0e · #65f10e

#f10e65 · #d6f10e · #0ef19a

Contrast

#290ef1 as textRatioAAAA largeAAAFix
Aaon white
8.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.43:1failfailfail
  • AA: use #7160f6 as the text (4.71:1)
  • AAA: use #9487f8 as the text (7.08:1)
  • AA: or shift the background to #bdbdbd (4.61:1)
  • AAA: or shift the background to #e8e8e8 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #290ef1 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#290ef1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #290ef1
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 #290ef1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/290ef1-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