Color

#516155

#516155
hex#516155
rgbrgb(81, 97, 85)
hslhsl(135, 9%, 35%)
oklchoklch(0.475 0.027 152.9)
Closest name: Black Forest (#5e6354)Relative luminance 0.1095

Tints & shades

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

Harmonies

Complementary

Open in tool →

#61515d

#556151 · #51615d

#555161 · #615551

Split-complementary

Open in tool →

#5d5161 · #615155

#515561 · #61515d · #615d51

Contrast

#516155 as textRatioAAAA largeAAAFix
Aaon white
6.58:1passpassfail
  • AAA: use #4d5c50 as the text (7.09:1)
Aaon black
3.19:1failpassfail
  • AA: use #667a6b as the text (4.56:1)
  • AAA: use #879b8c as the text (7.1:1)
  • AA: or shift the background to #d6d6d6 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516155 as the background.

Brands using this color

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

Fonts for this mood

#516155 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #516155
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 #516155 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516155-a2beac-b759d4-1f2d29-ebf1e9?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