Color

#ff3b0f

#ff3b0f
hex#ff3b0f
rgbrgb(255, 59, 15)
hslhsl(11, 100%, 53%)
oklchoklch(0.652 0.235 32.9)
Closest name: orangered (#ff4500)Relative luminance 0.2442

Colors that go with #ff3b0f

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 →

#0fd3ff

#ff0f5b · #ffb30f

#0fff3b · #3b0fff

Split-complementary

Open in tool →

#0fffb3 · #0f5bff

#5bff0f · #0fd3ff · #b30fff

Contrast

#ff3b0f as textRatioAAAA largeAAAFix
Aaon white
3.57:1failpassfail
  • AA: use #e02900 as the text (4.68:1)
  • AAA: use #ad2000 as the text (7.04:1)
  • AA: or shift the background to #212121 (4.51:1)
Aaon black
5.88:1passpassfail
  • AAA: use #ff613d 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 #ff3b0f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ff3b0f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff3b0f
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 #ff3b0f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff3b0f-c4a89c-62cbab-2d281f-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