Color

#f05151

#f05151
hex#f05151
rgbrgb(240, 81, 81)
hslhsl(0, 84%, 63%)
oklchoklch(0.653 0.195 24.3)
Closest name: Amour (#ee5851)Relative luminance 0.25

Tints & shades

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

Harmonies

Complementary

Open in tool →

#51f0f0

#f051a1 · #f0a151

#51f051 · #5151f0

Split-complementary

Open in tool →

#51f0a1 · #51a1f0

#a1f051 · #51f0f0 · #a151f0

Contrast

#f05151 as textRatioAAAA largeAAAFix
Aaon white
3.5:1failpassfail
  • AA: use #eb1414 as the text (4.52:1)
  • AAA: use #b21010 as the text (7.06:1)
  • AA: or shift the background to #212121 (4.6:1)
Aaon black
6:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f05151 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

#f05151 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f05151
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 #f05151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f05151-c4a19c-62cb98-2d251f-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