Color

#280b41

#280b41
hex#280b41
rgbrgb(40, 11, 65)
hslhsl(272, 71%, 15%)
oklchoklch(0.232 0.096 304.2)
Closest name: Your Darkness (#220044)Relative luminance 0.0107

Colors that go with #280b41

Royal Blue, Teal and Amber 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 →

#24410b

#0d0b41 · #410b40

#41280b · #0b4128

Split-complementary

Open in tool →

#40410b · #0b410d

#410d0b · #24410b · #0b4041

Contrast

#280b41 as textRatioAAAA largeAAAFix
Aaon white
17.29:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #9b4ce1 as the text (4.51:1)
  • AAA: use #b67ce9 as the text (7.05:1)
  • AA: or shift the background to #858585 (4.69:1)
  • AAA: or shift the background to #a6a6a6 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280b41 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

#280b41 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280b41
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 #280b41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280b41-b69cc4-c5cb62-2d1f2d-eae9f1?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