Color

#ff0a12

#ff0a12
hex#ff0a12
rgbrgb(255, 10, 18)
hslhsl(358, 100%, 52%)
oklchoklch(0.63 0.255 28.4)
Closest name: red (#ff0000)Relative luminance 0.2152

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0afff7

#ff0a8d · #ff7c0a

#12ff0a · #0a12ff

Split-complementary

Open in tool →

#0aff7c · #0a8dff

#8dff0a · #0afff7 · #7c0aff

Contrast

#ff0a12 as textRatioAAAA largeAAAFix
Aaon white
3.96:1failpassfail
  • 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 (4.53:1)
Aaon black
5.3:1passpassfail
  • 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 #ff0a12 as the background.

Brands using this color

Fonts for this mood

#ff0a12 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff0a12
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 #ff0a12 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff0a12-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