Color

#ff0f33

#ff0f33
hex#ff0f33
rgbrgb(255, 15, 51)
hslhsl(351, 100%, 53%)
oklchoklch(0.633 0.252 24.1)
Closest name: red (#ff0000)Relative luminance 0.2184

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0fffdb

#ff0fab · #ff630f

#33ff0f · #0f33ff

Split-complementary

Open in tool →

#0fff63 · #0fabff

#abff0f · #0fffdb · #630fff

Contrast

#ff0f33 as textRatioAAAA largeAAAFix
Aaon white
3.91:1failpassfail
  • AA: use #eb0023 as the text (4.61:1)
  • AAA: use #b3001b as the text (7.16:1)
  • AA: or shift the background to #171717 (4.58:1)
Aaon black
5.37:1passpassfail
  • AAA: use #ff5c74 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff0f33 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#ff0f33 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff0f33
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 #ff0f33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff0f33-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