Color

#e40728

#e40728
hex#e40728
rgbrgb(228, 7, 40)
hslhsl(351, 94%, 46%)
oklchoklch(0.58 0.233 24.8)
Closest name: Barberry (#ee1133)Relative luminance 0.168

Colors that go with #e40728

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 →

#07e4c2

#e40796 · #e45407

#28e407 · #0728e4

Split-complementary

Open in tool →

#07e454 · #0796e4

#96e407 · #07e4c2 · #5407e4

Contrast

#e40728 as textRatioAAAA largeAAAFix
Aaon white
4.82:1passpassfail
  • AAA: use #b2061f as the text (7.15:1)
Aaon black
4.36:1failpassfail
  • AA: use #e90729 as the text (4.53:1)
  • AAA: use #fa6178 as the text (7.05:1)
  • 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 #e40728 as the background.

Brands using this color

Fonts for this mood

#e40728 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e40728
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 #e40728 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e40728-c49c9e-62cb89-2d231f-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