Color

#ff850a

#ff850a
hex#ff850a
rgbrgb(255, 133, 10)
hslhsl(30, 100%, 52%)
oklchoklch(0.74 0.182 54.7)
Closest name: Atomic Orange (#f88605)Relative luminance 0.3806

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a85ff

#ff0a0a · #ffff0a

#0aff85 · #850aff

Split-complementary

Open in tool →

#0affff · #0a0aff

#0aff0a · #0a85ff · #ff0aff

Contrast

#ff850a as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #b85c00 as the text (4.6:1)
  • AAA: use #8a4500 as the text (7.16:1)
  • AA: or shift the background to #3b3b3b (4.59:1)
  • AAA: or shift the background to #1a1a1a (7.14:1)
Aaon black
8.61:1passpasspassPasses 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 #ff850a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#ff850a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff850a
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 #ff850a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff850a-c4b59c-62c9cb-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