Color

#fd3721

#fd3721
hex#fd3721
rgbrgb(253, 55, 33)
hslhsl(6, 98%, 56%)
oklchoklch(0.647 0.235 30.5)
Closest name: orangered (#ff4500)Relative luminance 0.2372

Colors that go with #fd3721

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 →

#21e7fd

#fd2179 · #fda521

#21fd37 · #3721fd

Split-complementary

Open in tool →

#21fda5 · #2179fd

#79fd21 · #21e7fd · #a521fd

Contrast

#fd3721 as textRatioAAAA largeAAAFix
Aaon white
3.66:1failpassfail
  • AA: use #e81902 as the text (4.59:1)
  • AAA: use #b11302 as the text (7.09:1)
  • AA: or shift the background to #1f1f1f (4.51:1)
Aaon black
5.74:1passpassfail
  • AAA: use #fd6453 as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fd3721 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#fd3721 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fd3721
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 #fd3721 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fd3721-c4a59c-62cba3-2d271f-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