Color

sienna

#a0522d
hex#a0522d
rgbrgb(160, 82, 45)
hslhsl(19, 56%, 40%)
oklchoklch(0.526 0.115 44.6)
Relative luminance 0.137

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2d7b9f

#9f2d42 · #9f8a2d

#2d9f51 · #512d9f

Split-complementary

Open in tool →

#2d9f8a · #2d429f

#429f2d · #2d7b9f · #8a2d9f

Contrast

sienna as textRatioAAAA largeAAAFix
Aaon white
5.62:1passpassfail
  • AAA: use #874526 as the text (7.22:1)
Aaon black
3.74:1failpassfail
  • AA: use #b75d34 as the text (4.63:1)
  • AAA: use #d1815c as the text (7.01:1)
  • AA: or shift the background to #e8e8e8 (4.58:1)

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

Brands using this color

Fonts for this mood

sienna reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around sienna
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 #a0522d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a0522d-c4ad9c-62cbb9-2d2a1f-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