brandsweets

Color

#516481

#516481
hex#516481
rgbrgb(81, 100, 129)
hslhsl(216, 23%, 41%)
oklchoklch(0.499 0.052 258.7)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1245
CoolMuted
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
516481816d51

#816d51

Analogous

Open in tool →
516481517c81555181

#517c81 · #555181

Triadic

Open in tool →
516481815164648151

#815164 · #648151

Split-complementary

Open in tool →
5164818155517c8151

#815551 · #7c8151

Tetradic

Open in tool →
51648181517c816d51518155

#81517c · #816d51 · #518155

Contrast

#516481 as textRatioAAAA largeAAAFix
Aaon white
6.02:1passpassfail
Aaon black
3.49:1failpassfail
  • AA: use #60779a as the text (4.6:1)
  • AAA: use #8597b2 as the text (7.07:1)
  • AA: or shift the background to #e0e0e0 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516481 as the background.

Brands using this color

mcpConnect your agent — build around #516481
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 #516481 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516481-9ca7c4-df5f4e-201f2d-e9f0f1?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