Color

#ed231d

#ed231d
hex#ed231d
rgbrgb(237, 35, 29)
hslhsl(2, 85%, 52%)
oklchoklch(0.606 0.232 28.7)
Closest name: Alarm (#ec0003)Relative luminance 0.193

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1de6ed

#ed1d7e · #ed8c1d

#1ded23 · #231ded

Split-complementary

Open in tool →

#1ded8c · #1d7eed

#7eed1d · #1de6ed · #8c1ded

Contrast

#ed231d as textRatioAAAA largeAAAFix
Aaon white
4.32:1failpassfail
  • AA: use #e71a13 as the text (4.61:1)
  • AAA: use #af130e as the text (7.19:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.86:1passpassfail
  • AAA: use #f36d68 as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ed231d as the background.

Brands using this color

Fonts for this mood

#ed231d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ed231d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #ed231d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ed231d-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