Color

#f3161e

#f3161e
hex#f3161e
rgbrgb(243, 22, 30)
hslhsl(358, 90%, 52%)
oklchoklch(0.611 0.242 27.6)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1972

Colors that go with #f3161e

Charcoal, Royal Blue and Steel Blue 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 →

#16f3eb

#f3168c · #f37d16

#1ef316 · #161ef3

Split-complementary

Open in tool →

#16f37d · #168cf3

#8cf316 · #16f3eb · #7d16f3

Contrast

#f3161e as textRatioAAAA largeAAAFix
Aaon white
4.25:1failpassfail
  • AA: use #ed0c14 as the text (4.5:1)
  • AAA: use #b3090f as the text (7.09:1)
  • AA: or shift the background to #0f0f0f (4.51:1)
Aaon black
4.94:1passpassfail
  • AAA: use #f7696e 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 #f3161e as the background.

Brands using this color

Fonts for this mood

#f3161e reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f3161e
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 #f3161e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f3161e-c49f9c-62cb95-2d251f-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