Color

#ec1818

#ec1818
hex#ec1818
rgbrgb(236, 24, 24)
hslhsl(0, 85%, 51%)
oklchoklch(0.599 0.236 28.4)
Closest name: Alarm (#ec0003)Relative luminance 0.1855

Colors that go with #ec1818

Charcoal, Royal Blue 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 →

#18ecec

#ec1882 · #ec8218

#18ec18 · #1818ec

Split-complementary

Open in tool →

#18ec82 · #1882ec

#82ec18 · #18ecec · #8218ec

Contrast

#ec1818 as textRatioAAAA largeAAAFix
Aaon white
4.46:1failpassfail
  • AA: use #e71313 as the text (4.67:1)
  • AAA: use #b30f0f as the text (7.02:1)
  • AA: or shift the background to #050505 (4.57:1)
Aaon black
4.71:1passpassfail
  • AAA: use #f36d6d as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ec1818 as the background.

Brands using this color

Fonts for this mood

#ec1818 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ec1818
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 #ec1818 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ec1818-c4a19c-62cb98-2d251f-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