Color

#280301

#280301
hex#280301
rgbrgb(40, 3, 1)
hslhsl(3, 95%, 8%)
oklchoklch(0.181 0.065 31.1)
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 →

#012628

#280112 · #281601

#012803 · #030128

Split-complementary

Open in tool →

#012816 · #011228

#122801 · #012628 · #160128

Contrast

#280301 as textRatioAAAA largeAAAFix
Aaon white
19.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #ea1106 as the text (4.58:1)
  • AAA: use #fb635b as the text (7.04:1)
  • 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 #280301 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

#280301 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #280301
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 #280301 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/280301-c4a39c-62cb9d-2d261f-f1e9ed?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