Color

#ff4751

#ff4751
hex#ff4751
rgbrgb(255, 71, 81)
hslhsl(357, 100%, 64%)
oklchoklch(0.668 0.219 22.7)
Closest name: Blood Burst (#ff474c)Relative luminance 0.2636

Tints & shades

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

Harmonies

Complementary

Open in tool →

#47fff6

#ff47ac · #ff9a47

#51ff47 · #4751ff

Split-complementary

Open in tool →

#47ff9a · #47acff

#acff47 · #47fff6 · #9a47ff

Contrast

#ff4751 as textRatioAAAA largeAAAFix
Aaon white
3.35:1failpassfail
  • AA: use #eb000c as the text (4.63:1)
  • AAA: use #b30009 as the text (7.19:1)
  • AA: or shift the background to #262626 (4.52:1)
Aaon black
6.27:1passpassfail
  • AAA: use #ff6169 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff4751 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

#ff4751 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff4751
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 #ff4751 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff4751-c49f9c-62cb93-2d251f-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