Color

#ff901a

#ff901a
hex#ff901a
rgbrgb(255, 144, 26)
hslhsl(31, 100%, 55%)
oklchoklch(0.758 0.174 58.7)
Closest name: darkorange (#ff8c00)Relative luminance 0.4128

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1a88ff

#ff1d1a · #fbff1a

#1aff90 · #901aff

Split-complementary

Open in tool →

#1afbff · #1d1aff

#1aff1d · #1a88ff · #ff1afb

Contrast

#ff901a as textRatioAAAA largeAAAFix
Aaon white
2.27:1failfailfail
  • AA: use #b35c00 as the text (4.72:1)
  • AAA: use #8a4700 as the text (7.04:1)
  • AA: or shift the background to #404040 (4.57:1)
  • AAA: or shift the background to #212121 (7.1:1)
Aaon black
9.26:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ff901a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ff901a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff901a
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 #ff901a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff901a-c4b59c-62c7cb-2d2c1f-f1eae9?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