Color

#ef1e1a

#ef1e1a
hex#ef1e1a
rgbrgb(239, 30, 26)
hslhsl(1, 87%, 52%)
oklchoklch(0.607 0.236 28.6)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1935

Colors that go with #ef1e1a

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 →

#1aecef

#ef1a81 · #ef881a

#1aef1e · #1e1aef

Split-complementary

Open in tool →

#1aef88 · #1a81ef

#81ef1a · #1aecef · #881aef

Contrast

#ef1e1a as textRatioAAAA largeAAAFix
Aaon white
4.31:1failpassfail
  • AA: use #ea1410 as the text (4.56:1)
  • AAA: use #b00f0c as the text (7.19:1)
  • AA: or shift the background to #0d0d0d (4.51:1)
Aaon black
4.87:1passpassfail
  • AAA: use #f46966 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ef1e1a as the background.

Brands using this color

Fonts for this mood

#ef1e1a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ef1e1a
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 #ef1e1a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef1e1a-c4a19c-62cb9a-2d261f-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