Color

#2f15ef

#2f15ef
hex#2f15ef
rgbrgb(47, 21, 239)
hslhsl(247, 87%, 51%)
oklchoklch(0.452 0.284 270.5)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0737

Colors that go with #2f15ef

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 →

#d5ef15

#1569ef · #9b15ef

#ef2f15 · #15ef2f

Split-complementary

Open in tool →

#ef9b15 · #69ef15

#ef1569 · #d5ef15 · #15ef9b

Contrast

#2f15ef as textRatioAAAA largeAAAFix
Aaon white
8.49:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #6e5df4 as the text (4.54:1)
  • AAA: use #9588f7 as the text (7.14:1)
  • 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 #2f15ef as the background.

Brands using this color

Fonts for this mood

#2f15ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f15ef
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 #2f15ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f15ef-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