Color

#ec3f18

#ec3f18
hex#ec3f18
rgbrgb(236, 63, 24)
hslhsl(11, 85%, 51%)
oklchoklch(0.623 0.215 33.5)
Closest name: Arcade Fire (#ee3311)Relative luminance 0.2145

Colors that go with #ec3f18

Charcoal, Sea Green and Steel Blue 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 →

#18c5ec

#ec185b · #eca918

#18ec3f · #3f18ec

Split-complementary

Open in tool →

#18eca9 · #185bec

#5bec18 · #18c5ec · #a918ec

Contrast

#ec3f18 as textRatioAAAA largeAAAFix
Aaon white
3.97:1failpassfail
  • AA: use #de3712 as the text (4.51:1)
  • AAA: use #a5290d as the text (7.18:1)
  • AA: or shift the background to #171717 (4.52:1)
Aaon black
5.29:1passpassfail
  • AAA: use #f16e50 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ec3f18 as the background.

Brands using this color

Fonts for this mood

#ec3f18 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ec3f18
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 #ec3f18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ec3f18-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