Color

#ff0d05

#ff0d05
hex#ff0d05
rgbrgb(255, 13, 5)
hslhsl(2, 100%, 51%)
oklchoklch(0.63 0.255 29.4)
Closest name: red (#ff0000)Relative luminance 0.2156

Tints & shades

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

Harmonies

Complementary

Open in tool →

#05f7ff

#ff057a · #ff8a05

#05ff0d · #0d05ff

Split-complementary

Open in tool →

#05ff8a · #057aff

#7aff05 · #05f7ff · #8a05ff

Contrast

#ff0d05 as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #eb0800 as the text (4.6:1)
  • AAA: use #b30600 as the text (7.14:1)
  • AA: or shift the background to #171717 (4.53:1)
Aaon black
5.31:1passpassfail
  • AAA: use #ff615c as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff0d05 as the background.

Brands using this color

Fonts for this mood

#ff0d05 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff0d05
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 #ff0d05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff0d05-c4a29c-62cb9c-2d261f-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