Color

#ff2a1f

#ff2a1f
hex#ff2a1f
rgbrgb(255, 42, 31)
hslhsl(3, 100%, 56%)
oklchoklch(0.642 0.244 29.2)
Closest name: red (#ff0000)Relative luminance 0.2301

Colors that go with #ff2a1f

Charcoal, Cadet Blue and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1ff4ff

#ff1f84 · #ff9a1f

#1fff2a · #2a1fff

Split-complementary

Open in tool →

#1fff9a · #1f84ff

#84ff1f · #1ff4ff · #9a1fff

Contrast

#ff2a1f as textRatioAAAA largeAAAFix
Aaon white
3.75:1failpassfail
  • AA: use #eb0c00 as the text (4.58:1)
  • AAA: use #b30900 as the text (7.1:1)
  • AA: or shift the background to #1c1c1c (4.55:1)
Aaon black
5.6:1passpassfail
  • AAA: use #ff5f57 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff2a1f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ff2a1f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff2a1f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #ff2a1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff2a1f-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