Color

#ff4d4d

#ff4d4d
hex#ff4d4d
rgbrgb(255, 77, 77)
hslhsl(0, 100%, 65%)
oklchoklch(0.673 0.215 25)
Closest name: Blood Burst (#ff474c)Relative luminance 0.271

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4dffff

#ff4da6 · #ffa64d

#4dff4d · #4d4dff

Split-complementary

Open in tool →

#4dffa6 · #4da6ff

#a6ff4d · #4dffff · #a64dff

Contrast

#ff4d4d as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #eb0000 as the text (4.63:1)
  • AAA: use #b30000 as the text (7.2:1)
  • AA: or shift the background to #262626 (4.63:1)
Aaon black
6.42:1passpassfail
  • AAA: use #ff6161 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff4d4d as the background.

Brands using this color

Fonts for this mood

#ff4d4d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff4d4d
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 #ff4d4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff4d4d-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