Color

#ff3347

#ff3347
hex#ff3347
rgbrgb(255, 51, 71)
hslhsl(354, 100%, 60%)
oklchoklch(0.651 0.235 22.4)
Closest name: Blood Burst (#ff474c)Relative luminance 0.2408

Tints & shades

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

Harmonies

Complementary

Open in tool →

#33ffeb

#ff33ad · #ff8533

#47ff33 · #3347ff

Split-complementary

Open in tool →

#33ff85 · #33adff

#adff33 · #33ffeb · #8533ff

Contrast

#ff3347 as textRatioAAAA largeAAAFix
Aaon white
3.61:1failpassfail
  • AA: use #eb0017 as the text (4.62:1)
  • AAA: use #b30012 as the text (7.18:1)
  • AA: or shift the background to #1f1f1f (4.57:1)
Aaon black
5.82:1passpassfail
  • AAA: use #ff6171 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 #ff3347 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

#ff3347 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff3347
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 #ff3347 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff3347-c49d9c-62cb8e-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