Color

#2b16e9

#2b16e9
hex#2b16e9
rgbrgb(43, 22, 233)
hslhsl(246, 83%, 50%)
oklchoklch(0.443 0.278 269.9)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0697

Colors that go with #2b16e9

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 →

#d4e916

#166ae9 · #9516e9

#e92b16 · #16e92b

Split-complementary

Open in tool →

#e99516 · #6ae916

#e9166a · #d4e916 · #16e995

Contrast

#2b16e9 as textRatioAAAA largeAAAFix
Aaon white
8.77:1passpasspassPasses AAA — no fix needed.
Aaon black
2.39:1failfailfail
  • AA: use #6f60f0 as the text (4.61:1)
  • AAA: use #958af4 as the text (7.22:1)
  • AA: or shift the background to #bababa (4.52:1)
  • AAA: or shift the background to #e6e6e6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b16e9 as the background.

Brands using this color

Fonts for this mood

#2b16e9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b16e9
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 #2b16e9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b16e9-a59cc4-dfa74e-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