Color

#280fe6

#280fe6
hex#280fe6
rgbrgb(40, 15, 230)
hslhsl(247, 88%, 48%)
oklchoklch(0.435 0.279 269.4)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0651

Colors that go with #280fe6

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 →

#cde60f

#0f61e6 · #940fe6

#e6280f · #0fe628

Split-complementary

Open in tool →

#e6940f · #61e60f

#e60f61 · #cde60f · #0fe694

Contrast

#280fe6 as textRatioAAAA largeAAAFix
Aaon white
9.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.3:1failfailfail
  • AA: use #6e5cf5 as the text (4.51:1)
  • AAA: use #9487f7 as the text (7.07:1)
  • AA: or shift the background to #b8b8b8 (4.6:1)
  • AAA: or shift the background to #e3e3e3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280fe6 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

#280fe6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280fe6
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 #280fe6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280fe6-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