Color

#5176fb

#5176fb
hex#5176fb
rgbrgb(81, 118, 251)
hslhsl(227, 96%, 65%)
oklchoklch(0.612 0.202 268.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2167

Colors that go with #5176fb

Charcoal, Red and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbd650

#50cbfb · #8150fb

#fb5075 · #75fb50

Split-complementary

Open in tool →

#fb8150 · #cbfb50

#fb50cb · #fbd650 · #50fb81

Contrast

#5176fb as textRatioAAAA largeAAAFix
Aaon white
3.94:1failpassfail
  • AA: use #4169fb as the text (4.53:1)
  • AAA: use #053afa as the text (7.02:1)
  • AA: or shift the background to #171717 (4.55:1)
Aaon black
5.33:1passpassfail
  • AAA: use #7391fc as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5176fb 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

#5176fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5176fb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #5176fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5176fb-9ca0c4-df7a4e-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