Color

#280b65

#280b65
hex#280b65
rgbrgb(40, 11, 101)
hslhsl(259, 80%, 22%)
oklchoklch(0.271 0.14 287.3)
Closest name: Blackmail (#220066)Relative luminance 0.0163

Tints & shades

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

Harmonies

Complementary

Open in tool →

#49650b

#0b1c65 · #550b65

#65280b · #0b6528

Split-complementary

Open in tool →

#65550b · #1c650b

#650b1c · #49650b · #0b6555

Contrast

#280b65 as textRatioAAAA largeAAAFix
Aaon white
15.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • AA: use #8555ec as the text (4.51:1)
  • AAA: use #a683f1 as the text (7.14:1)
  • AA: or shift the background to #8a8a8a (4.59:1)
  • AAA: or shift the background to #adadad (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280b65 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

#280b65 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280b65
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 #280b65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280b65-ad9cc4-dfc74e-2a1f2d-e9ebf1?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