Color

#f01800

#f01800
hex#f01800
rgbrgb(240, 24, 0)
hslhsl(6, 100%, 47%)
oklchoklch(0.605 0.241 30.3)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1918

Tints & shades

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

Harmonies

Complementary

Open in tool →

#00d8f0

#f00060 · #f09000

#00f018 · #1800f0

Split-complementary

Open in tool →

#00f090 · #0060f0

#60f000 · #00d8f0 · #9000f0

Contrast

#f01800 as textRatioAAAA largeAAAFix
Aaon white
4.34:1failpassfail
  • AA: use #eb1700 as the text (4.51:1)
  • AAA: use #ad1100 as the text (7.35:1)
  • AA: or shift the background to #0a0a0a (4.56:1)
Aaon black
4.84:1passpassfail
  • AAA: use #ff6352 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f01800 as the background.

Brands using this color

Fonts for this mood

#f01800 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f01800
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 #f01800 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f01800-c4a59c-62cba3-2d271f-f1e9ec?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