Color

#51603e

#51603e
hex#51603e
rgbrgb(81, 96, 62)
hslhsl(86, 22%, 31%)
oklchoklch(0.467 0.055 127.7)
Closest name: Cypress (#585d40)Relative luminance 0.1046

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d3e60

#605e3e · #40603e

#3e5160 · #603e51

Split-complementary

Open in tool →

#3e4060 · #5e3e60

#3e605e · #4d3e60 · #603e40

Contrast

#51603e as textRatioAAAA largeAAAFix
Aaon white
6.79:1passpassfail
  • AAA: use #4f5d3c as the text (7.09:1)
Aaon black
3.09:1failpassfail
  • AA: use #697c50 as the text (4.6:1)
  • AAA: use #869e67 as the text (7.1:1)
  • AA: or shift the background to #d4d4d4 (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 #51603e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #51603e
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 #51603e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51603e-afbea2-4e56df-212d1f-f1f1e9?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