Color

#516fc2

#516fc2
hex#516fc2
rgbrgb(81, 111, 194)
hslhsl(224, 48%, 54%)
oklchoklch(0.559 0.133 267.1)
Closest name: Loch Ness (#5f6db0)Relative luminance 0.1701

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c2a451

#51a8c2 · #6c51c2

#c2516f · #6fc251

Split-complementary

Open in tool →

#c26c51 · #a8c251

#c251a8 · #c2a451 · #51c26c

Contrast

#516fc2 as textRatioAAAA largeAAAFix
Aaon white
4.77:1passpassfail
  • AAA: use #3955a2 as the text (7.01:1)
Aaon black
4.4:1failpassfail
  • AA: use #5573c3 as the text (4.63:1)
  • AAA: use #7f95d2 as the text (7.13:1)
  • AA: or shift the background to #fafafa (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #516fc2 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

#516fc2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #516fc2
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 #516fc2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/516fc2-9ca2c4-df724e-221f2d-e9eff1?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