Color

#e40712

#e40712
hex#e40712
rgbrgb(228, 7, 18)
hslhsl(357, 94%, 46%)
oklchoklch(0.579 0.235 28.1)
Closest name: Alarm (#ec0003)Relative luminance 0.1669

Colors that go with #e40712

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 →

#07e4d9

#e40780 · #e46a07

#12e407 · #0712e4

Split-complementary

Open in tool →

#07e46a · #0780e4

#80e407 · #07e4d9 · #6a07e4

Contrast

#e40712 as textRatioAAAA largeAAAFix
Aaon white
4.84:1passpassfail
  • AAA: use #b2060e as the text (7.18:1)
Aaon black
4.34:1failpassfail
  • AA: use #e90712 as the text (4.5:1)
  • AAA: use #fa666d as the text (7.19:1)
  • AA: or shift the background to #f7f7f7 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e40712 as the background.

Brands using this color

Fonts for this mood

#e40712 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e40712
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 #e40712 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e40712-c49f9c-62cb93-2d251f-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