Color

#e40e07

#e40e07
hex#e40e07
rgbrgb(228, 14, 7)
hslhsl(2, 94%, 46%)
oklchoklch(0.58 0.234 29.3)
Closest name: Alarm (#ec0003)Relative luminance 0.1682

Colors that go with #e40e07

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 →

#07dce4

#e4076e · #e47d07

#07e40e · #0e07e4

Split-complementary

Open in tool →

#07e47d · #076ee4

#6ee407 · #07dce4 · #7d07e4

Contrast

#e40e07 as textRatioAAAA largeAAAFix
Aaon white
4.81:1passpassfail
  • AAA: use #b20b06 as the text (7.13:1)
Aaon black
4.36:1failpassfail
  • AA: use #e90f07 as the text (4.54:1)
  • AAA: use #fa6661 as the text (7.14:1)
  • AA: or shift the background to #fafafa (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e40e07 as the background.

Brands using this color

Fonts for this mood

#e40e07 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e40e07
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 #e40e07 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e40e07-c4a29c-62cb9c-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