Color

#fb2104

#fb2104
hex#fb2104
rgbrgb(251, 33, 4)
hslhsl(7, 97%, 50%)
oklchoklch(0.629 0.246 30.6)
Closest name: Apple Cherry (#f81404)Relative luminance 0.2161

Colors that go with #fb2104

Charcoal, Steel Blue and Cadet Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#04defb

#fb0463 · #fb9c04

#04fb21 · #2104fb

Split-complementary

Open in tool →

#04fb9c · #0463fb

#63fb04 · #04defb · #9c04fb

Contrast

#fb2104 as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #e71e04 as the text (4.58:1)
  • AAA: use #b01703 as the text (7.07:1)
  • AA: or shift the background to #171717 (4.54:1)
Aaon black
5.32:1passpassfail
  • AAA: use #fc634f 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 #fb2104 as the background.

Brands using this color

Fonts for this mood

#fb2104 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fb2104
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #fb2104 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fb2104-c4a59c-62cba4-2d271f-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