Color

#ff5900

#ff5900
hex#ff5900
rgbrgb(255, 89, 0)
hslhsl(21, 100%, 50%)
oklchoklch(0.68 0.214 39.8)
Closest name: orangered (#ff4500)Relative luminance 0.284

Tints & shades

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

Harmonies

Complementary

Open in tool →

#00a6ff

#ff0026 · #ffd900

#00ff59 · #5900ff

Split-complementary

Open in tool →

#00ffd9 · #0026ff

#26ff00 · #00a6ff · #d900ff

Contrast

#ff5900 as textRatioAAAA largeAAAFix
Aaon white
3.14:1failpassfail
  • AA: use #d14900 as the text (4.5:1)
  • AAA: use #993600 as the text (7.29:1)
  • AA: or shift the background to #2b2b2b (4.5:1)
Aaon black
6.68:1passpassfail
  • AAA: use #ff630f 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 #ff5900 as the background.

Brands using this color

Fonts for this mood

#ff5900 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff5900
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 #ff5900 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff5900-c4af9c-62cbbd-2d2a1f-f1e9ea?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