Color

#ff050d

#ff050d
hex#ff050d
rgbrgb(255, 5, 13)
hslhsl(358, 100%, 51%)
oklchoklch(0.629 0.256 28.7)
Closest name: red (#ff0000)Relative luminance 0.214

Tints & shades

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

Harmonies

Complementary

Open in tool →

#05fff7

#ff058a · #ff7a05

#0dff05 · #050dff

Split-complementary

Open in tool →

#05ff7a · #058aff

#8aff05 · #05fff7 · #7a05ff

Contrast

#ff050d as textRatioAAAA largeAAAFix
Aaon white
3.98:1failpassfail
  • AA: use #eb0008 as the text (4.63:1)
  • AAA: use #b30006 as the text (7.19:1)
  • AA: or shift the background to #171717 (4.51:1)
Aaon black
5.28:1passpassfail
  • AAA: use #ff6166 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff050d as the background.

Brands using this color

Fonts for this mood

#ff050d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff050d
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 #ff050d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff050d-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