Color

#ff0f23

#ff0f23
hex#ff0f23
rgbrgb(255, 15, 35)
hslhsl(355, 100%, 53%)
oklchoklch(0.632 0.253 26.8)
Closest name: red (#ff0000)Relative luminance 0.2172

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0fffeb

#ff0f9b · #ff730f

#23ff0f · #0f23ff

Split-complementary

Open in tool →

#0fff73 · #0f9bff

#9bff0f · #0fffeb · #730fff

Contrast

#ff0f23 as textRatioAAAA largeAAAFix
Aaon white
3.93:1failpassfail
  • AA: use #eb0014 as the text (4.62:1)
  • AAA: use #b3000f as the text (7.18:1)
  • AA: or shift the background to #171717 (4.56:1)
Aaon black
5.34:1passpassfail
  • AAA: use #ff616e as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff0f23 as the background.

Brands using this color

Fonts for this mood

#ff0f23 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff0f23
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 #ff0f23 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff0f23-c49e9c-62cb8f-2d241f-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