Color

#516885

#516885
hex#516885
rgbrgb(81, 104, 133)
hslhsl(213, 24%, 42%)
oklchoklch(0.51 0.054 254.5)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1334

Tints & shades

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

Harmonies

Complementary

Open in tool →

#856e51

#518285 · #545185

#855169 · #698551

Split-complementary

Open in tool →

#855451 · #828551

#855182 · #856e51 · #518554

Contrast

#516885 as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #465a72 as the text (7.08:1)
Aaon black
3.67:1failpassfail
  • AA: use #5d7798 as the text (4.56:1)
  • AAA: use #8499b3 as the text (7.19:1)
  • AA: or shift the background to #e6e6e6 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516885 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 #516885
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 #516885 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516885-9ca9c4-df584e-1f202d-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