Color

#f66d37

#f66d37
hex#f66d37
rgbrgb(246, 109, 55)
hslhsl(17, 91%, 59%)
oklchoklch(0.694 0.181 40.5)
Closest name: Apocalyptic Orange (#f4711e)Relative luminance 0.3081

Tints & shades

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

Harmonies

Complementary

Open in tool →

#37c0f6

#f63761 · #f6cc37

#37f66d · #6d37f6

Split-complementary

Open in tool →

#37f6cc · #3761f6

#61f637 · #37c0f6 · #cc37f6

Contrast

#f66d37 as textRatioAAAA largeAAAFix
Aaon white
2.93:1failfailfail
  • AA: use #d1420a as the text (4.67:1)
  • AAA: use #a13308 as the text (7.02:1)
  • AA: or shift the background to #303030 (4.5:1)
  • AAA: or shift the background to #030303 (7.03:1)
Aaon black
7.16:1passpasspassPasses 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 #f66d37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#f66d37 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f66d37
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 #f66d37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f66d37-c4ac9c-62cbb6-2d291f-f1e9eb?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