Color

#f00a15

#f00a15
hex#f00a15
rgbrgb(240, 10, 21)
hslhsl(357, 92%, 49%)
oklchoklch(0.602 0.243 28)
Closest name: Alarm (#ec0003)Relative luminance 0.188

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0af0e4

#f00a88 · #f0710a

#15f00a · #0a15f0

Split-complementary

Open in tool →

#0af071 · #0a88f0

#88f00a · #0af0e4 · #710af0

Contrast

#f00a15 as textRatioAAAA largeAAAFix
Aaon white
4.41:1failpassfail
  • AA: use #eb0a15 as the text (4.58:1)
  • AAA: use #b00710 as the text (7.28:1)
  • AA: or shift the background to #080808 (4.54:1)
Aaon black
4.76:1passpassfail
  • AAA: use #f9676e as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f00a15 as the background.

Brands using this color

Fonts for this mood

#f00a15 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f00a15
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 #f00a15 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f00a15-c49f9c-62cb93-2d251f-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