Color

#ff3d4a

#ff3d4a
hex#ff3d4a
rgbrgb(255, 61, 74)
hslhsl(356, 100%, 62%)
oklchoklch(0.659 0.228 23)
Closest name: Blood Burst (#ff474c)Relative luminance 0.2509

Colors that go with #ff3d4a

Charcoal, Cadet Blue and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3dfff2

#ff3dab · #ff913d

#4aff3d · #3d4aff

Split-complementary

Open in tool →

#3dff91 · #3dabff

#abff3d · #3dfff2 · #913dff

Contrast

#ff3d4a as textRatioAAAA largeAAAFix
Aaon white
3.49:1failpassfail
  • AA: use #eb0010 as the text (4.63:1)
  • AAA: use #b3000c as the text (7.19:1)
  • AA: or shift the background to #212121 (4.61:1)
Aaon black
6.02:1passpassfail
  • AAA: use #ff616b 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 #ff3d4a as the background.

Brands using this color

Fonts for this mood

#ff3d4a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff3d4a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #ff3d4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff3d4a-c49e9c-62cb91-2d241f-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