Color

#280aeb

#280aeb
hex#280aeb
rgbrgb(40, 10, 235)
hslhsl(248, 92%, 48%)
oklchoklch(0.439 0.285 269.2)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0667

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#cdeb0a

#0a5ceb · #980aeb

#eb280a · #0aeb28

Split-complementary

Open in tool →

#eb980a · #5ceb0a

#eb0a5c · #cdeb0a · #0aeb98

Contrast

#280aeb as textRatioAAAA largeAAAFix
Aaon white
9:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #725df8 as the text (4.64:1)
  • AAA: use #9989fa as the text (7.31:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (7.01:1)

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

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

mcpConnect your agent — build around #280aeb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #280aeb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280aeb-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