Color

#ef1a06

#ef1a06
hex#ef1a06
rgbrgb(239, 26, 6)
hslhsl(5, 95%, 48%)
oklchoklch(0.605 0.239 30.1)
Closest name: Alarm (#ec0003)Relative luminance 0.191

Colors that go with #ef1a06

Charcoal, Royal Blue and Sea Green 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 →

#06dbef

#ef0667 · #ef8e06

#06ef1a · #1906ef

Split-complementary

Open in tool →

#06ef8e · #0667ef

#67ef06 · #06dbef · #8e06ef

Contrast

#ef1a06 as textRatioAAAA largeAAAFix
Aaon white
4.36:1failpassfail
  • AA: use #ea1906 as the text (4.53:1)
  • AAA: use #ae1304 as the text (7.25:1)
  • AA: or shift the background to #0a0a0a (4.54:1)
Aaon black
4.82:1passpassfail
  • AAA: use #fb6456 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 #ef1a06 as the background.

Brands using this color

Fonts for this mood

#ef1a06 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ef1a06
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 #ef1a06 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef1a06-c4a49c-62cba1-2d261f-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