Color

#ff0516

#ff0516
hex#ff0516
rgbrgb(255, 5, 22)
hslhsl(356, 100%, 51%)
oklchoklch(0.629 0.256 27.9)
Closest name: red (#ff0000)Relative luminance 0.2143

Tints & shades

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

Harmonies

Complementary

Open in tool →

#05ffee

#ff0593 · #ff7105

#16ff05 · #0516ff

Split-complementary

Open in tool →

#05ff71 · #0593ff

#93ff05 · #05ffee · #7105ff

Contrast

#ff0516 as textRatioAAAA largeAAAFix
Aaon white
3.97:1failpassfail
  • AA: use #eb0010 as the text (4.63:1)
  • AAA: use #b3000c as the text (7.19:1)
  • AA: or shift the background to #171717 (4.51:1)
Aaon black
5.29:1passpassfail
  • 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 #ff0516 as the background.

Brands using this color

Fonts for this mood

#ff0516 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff0516
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 #ff0516 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff0516-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