Color

#a80000

#a80000
hex#a80000
rgbrgb(168, 0, 0)
hslhsl(0, 100%, 33%)
oklchoklch(0.459 0.189 29.2)
Closest name: All Systems Red (#b30103)Relative luminance 0.0832

Tints & shades

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

Harmonies

Complementary

Open in tool →

#00a8a8

#a80054 · #a85400

#00a800 · #0000a8

Split-complementary

Open in tool →

#00a854 · #0054a8

#54a800 · #00a8a8 · #5400a8

Contrast

#a80000 as textRatioAAAA largeAAAFix
Aaon white
7.88:1passpasspassPasses AAA — no fix needed.
Aaon black
2.66:1failfailfail
  • AA: use #eb0000 as the text (4.53:1)
  • AAA: use #ff6161 as the text (7.13:1)
  • AA: or shift the background to #c4c4c4 (4.52:1)
  • AAA: or shift the background to #f2f2f2 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a80000 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

#a80000 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a80000
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 #a80000 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a80000-c4a19c-62cb98-2d251f-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