Color

#280300

#280300
hex#280300
rgbrgb(40, 3, 0)
hslhsl(5, 100%, 8%)
oklchoklch(0.18 0.065 33.6)
Closest name: Dwarf Fortress (#1d0200)Relative luminance 0.0052

Tints & shades

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

Harmonies

Complementary

Open in tool →

#002529

#290011 · #291800

#002903 · #030029

Split-complementary

Open in tool →

#002918 · #001129

#112900 · #002529 · #180029

Contrast

#280300 as textRatioAAAA largeAAAFix
Aaon white
19.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #eb1400 as the text (4.63:1)
  • AAA: use #ff6052 as the text (7.05:1)
  • AA: or shift the background to #7d7d7d (4.62:1)
  • AAA: or shift the background to #9e9e9e (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 #280300 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

#280300 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280300
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 #280300 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280300-c4a49c-62cba1-2d261f-f1e9ec?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