Color

#ef3e49

#ef3e49
hex#ef3e49
rgbrgb(239, 62, 73)
hslhsl(356, 85%, 59%)
oklchoklch(0.632 0.212 22.7)
Closest name: Angry Flamingo (#f04e45)Relative luminance 0.2228

Colors that go with #ef3e49

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.

Real palettes that use #ef3e49

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3eefe3

#ef3ea2 · #ef8b3e

#49ef3e · #3e49ef

Split-complementary

Open in tool →

#3eef8b · #3ea2ef

#a2ef3e · #3eefe3 · #8b3eef

Contrast

#ef3e49 as textRatioAAAA largeAAAFix
Aaon white
3.85:1failpassfail
  • AA: use #e71321 as the text (4.65:1)
  • AAA: use #b30f1a as the text (7:1)
  • AA: or shift the background to #1a1a1a (4.52:1)
Aaon black
5.46:1passpassfail
  • AAA: use #f36871 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 #ef3e49 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#ef3e49 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ef3e49
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 #ef3e49 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef3e49-c49e9c-62cb91-2d241f-f1e9ee?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