Color

#fb2833

#fb2833
hex#fb2833
rgbrgb(251, 40, 51)
hslhsl(357, 96%, 57%)
oklchoklch(0.635 0.24 25.6)
Closest name: red (#ff0000)Relative luminance 0.2227

Tints & shades

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

Harmonies

Complementary

Open in tool →

#28fbf0

#fb289c · #fb8728

#33fb28 · #2833fb

Split-complementary

Open in tool →

#28fb87 · #289cfb

#9cfb28 · #28fbf0 · #8728fb

Contrast

#fb2833 as textRatioAAAA largeAAAFix
Aaon white
3.85:1failpassfail
  • AA: use #eb0510 as the text (4.6:1)
  • AAA: use #b4040c as the text (7.09:1)
  • AA: or shift the background to #1a1a1a (4.52:1)
Aaon black
5.45:1passpassfail
  • AAA: use #fc646c as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fb2833 as the background.

Brands using this color

Fonts for this mood

#fb2833 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fb2833
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 #fb2833 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fb2833-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