Color

#f3871b

#f3871b
hex#f3871b
rgbrgb(243, 135, 27)
hslhsl(30, 90%, 53%)
oklchoklch(0.727 0.168 57.5)
Closest name: À l’Orange (#f2850d)Relative luminance 0.3646

Colors that go with #f3871b

Charcoal, Deep Sky 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 →

#1b87f3

#f31b1b · #f3f31b

#1bf387 · #871bf3

Split-complementary

Open in tool →

#1bf3f3 · #1b1bf3

#1bf31b · #1b87f3 · #f31bf3

Contrast

#f3871b as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #b35e09 as the text (4.64:1)
  • AAA: use #884707 as the text (7.12:1)
  • AA: or shift the background to #383838 (4.63:1)
  • AAA: or shift the background to #171717 (7.08:1)
Aaon black
8.29:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f3871b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#f3871b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f3871b
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 #f3871b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3871b-c4b59c-62c9cb-2d2c1f-f1eae9?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