Color

#a81600

#a81600
hex#a81600
rgbrgb(168, 22, 0)
hslhsl(8, 100%, 33%)
oklchoklch(0.468 0.181 31.3)
Closest name: Blood Rush (#aa2222)Relative luminance 0.089

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0092a8

#a8003e · #a86b00

#00a816 · #1600a8

Split-complementary

Open in tool →

#00a86b · #003ea8

#3ea800 · #0092a8 · #6b00a8

Contrast

#a81600 as textRatioAAAA largeAAAFix
Aaon white
7.55:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #e61f00 as the text (4.56:1)
  • AAA: use #ff6047 as the text (7.02:1)
  • AA: or shift the background to #c9c9c9 (4.56:1)
  • AAA: or shift the background to #f7f7f7 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a81600 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

#a81600 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a81600
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 #a81600 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a81600-c4a69c-62cba6-2d271f-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