Color

#280eaa

#280eaa
hex#280eaa
rgbrgb(40, 14, 170)
hslhsl(250, 85%, 36%)
oklchoklch(0.358 0.216 273.8)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0367

Tints & shades

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

Harmonies

Complementary

Open in tool →

#90aa0e

#0e42aa · #760eaa

#aa280e · #0eaa28

Split-complementary

Open in tool →

#aa760e · #42aa0e

#aa0e42 · #90aa0e · #0eaa76

Contrast

#280eaa as textRatioAAAA largeAAAFix
Aaon white
12.11:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #775ff2 as the text (4.7:1)
  • AAA: use #9b89f5 as the text (7.29:1)
  • AA: or shift the background to #9e9e9e (4.52:1)
  • AAA: or shift the background to #c7c7c7 (7.17:1)

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

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

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

tool url/palettes/new/280eaa-a79cc4-dfb14e-281f2d-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