Color

#ff2b0a

#ff2b0a
hex#ff2b0a
rgbrgb(255, 43, 10)
hslhsl(8, 100%, 52%)
oklchoklch(0.642 0.245 31.1)
Closest name: red (#ff0000)Relative luminance 0.2301

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0adeff

#ff0a64 · #ffa50a

#0aff2b · #2b0aff

Split-complementary

Open in tool →

#0affa5 · #0a64ff

#64ff0a · #0adeff · #a50aff

Contrast

#ff2b0a as textRatioAAAA largeAAAFix
Aaon white
3.75:1failpassfail
  • AA: use #e61f00 as the text (4.6:1)
  • AAA: use #ad1700 as the text (7.24:1)
  • AA: or shift the background to #1c1c1c (4.55:1)
Aaon black
5.6:1passpassfail
  • AAA: use #ff6047 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff2b0a as the background.

Brands using this color

Fonts for this mood

#ff2b0a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff2b0a
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 #ff2b0a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff2b0a-c4a69c-62cba6-2d271f-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