Color

#e52d15

#e52d15
hex#e52d15
rgbrgb(229, 45, 21)
hslhsl(7, 83%, 49%)
oklchoklch(0.597 0.221 31)
Closest name: Arcade Fire (#ee3311)Relative luminance 0.1859

Colors that go with #e52d15

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 →

#15cce5

#e51565 · #e59515

#15e52d · #2d15e5

Split-complementary

Open in tool →

#15e595 · #1565e5

#65e515 · #15cce5 · #9515e5

Contrast

#e52d15 as textRatioAAAA largeAAAFix
Aaon white
4.45:1failpassfail
  • AA: use #e02d15 as the text (4.61:1)
  • AAA: use #a82110 as the text (7.27:1)
  • AA: or shift the background to #050505 (4.58:1)
Aaon black
4.72:1passpassfail
  • AAA: use #f06d5c as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e52d15 as the background.

Brands using this color

Fonts for this mood

#e52d15 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e52d15
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 #e52d15 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e52d15-c4a59c-62cba4-2d271f-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