Color

#f50025

#f50025
hex#f50025
rgbrgb(245, 0, 37)
hslhsl(351, 100%, 48%)
oklchoklch(0.611 0.248 25.7)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1955

Tints & shades

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

Harmonies

Complementary

Open in tool →

#00f5d0

#f5009f · #f55600

#25f500 · #0025f5

Split-complementary

Open in tool →

#00f556 · #009ff5

#9ff500 · #00f5d0 · #5600f5

Contrast

#f50025 as textRatioAAAA largeAAAFix
Aaon white
4.28:1failpassfail
  • AA: use #eb0023 as the text (4.61:1)
  • AAA: use #b3001b as the text (7.16:1)
  • AA: or shift the background to #0d0d0d (4.54:1)
Aaon black
4.91:1passpassfail
  • AAA: use #ff5c74 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f50025 as the background.

Brands using this color

Fonts for this mood

#f50025 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f50025
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 #f50025 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f50025-c49c9e-62cb89-2d231f-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