Color

#280109

#280109
hex#280109
rgbrgb(40, 1, 9)
hslhsl(348, 95%, 8%)
oklchoklch(0.179 0.068 12.2)
Closest name: Belladonna (#220011)Relative luminance 0.0049

Tints & shades

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

Harmonies

Complementary

Open in tool →

#012820

#28011c · #280d01

#092801 · #010928

Split-complementary

Open in tool →

#01280d · #011c28

#1c2801 · #012820 · #0d0128

Contrast

#280109 as textRatioAAAA largeAAAFix
Aaon white
19.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #ea0634 as the text (4.57:1)
  • AAA: use #fb607f as the text (7.08:1)
  • AA: or shift the background to #7d7d7d (4.64:1)
  • AAA: or shift the background to #9e9e9e (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #280109 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

#280109 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280109
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 #280109 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280109-c49c9f-62cb83-2d231f-f1e9ef?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