Color

#2b0bf9

#2b0bf9
hex#2b0bf9
rgbrgb(43, 11, 249)
hslhsl(248, 95%, 51%)
oklchoklch(0.458 0.298 269.2)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0759

Colors that go with #2b0bf9

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 →

#d9f90b

#0b62f9 · #a20bf9

#f92b0b · #0bf92b

Split-complementary

Open in tool →

#f9a20b · #62f90b

#f90b62 · #d9f90b · #0bf9a2

Contrast

#2b0bf9 as textRatioAAAA largeAAAFix
Aaon white
8.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.52:1failfailfail
  • AA: use #705bfb as the text (4.58:1)
  • AAA: use #9788fc as the text (7.24:1)
  • AA: or shift the background to #bfbfbf (4.53:1)
  • AAA: or shift the background to #ededed (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 #2b0bf9 as the background.

Brands using this color

Fonts for this mood

#2b0bf9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b0bf9
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 #2b0bf9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b0bf9-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