Color

#280dbf

#280dbf
hex#280dbf
rgbrgb(40, 13, 191)
hslhsl(249, 87%, 40%)
oklchoklch(0.384 0.239 271.9)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.045

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a4bf0d

#0d4bbf · #810dbf

#bf280d · #0dbf28

Split-complementary

Open in tool →

#bf810d · #4bbf0d

#bf0d4b · #a4bf0d · #0dbf81

Contrast

#280dbf as textRatioAAAA largeAAAFix
Aaon white
11.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #735df4 as the text (4.6:1)
  • AAA: use #9888f7 as the text (7.2:1)
  • AA: or shift the background to #a6a6a6 (4.54:1)
  • AAA: or shift the background to #cfcfcf (7.09:1)

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

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

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

tool url/palettes/new/280dbf-a79cc4-dfae4e-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