Color

#5b76e1

#5b76e1
hex#5b76e1
rgbrgb(91, 118, 225)
hslhsl(228, 69%, 62%)
oklchoklch(0.599 0.165 270.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2062

Colors that go with #5b76e1

Charcoal, Sea Green 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 →

#e1c65b

#5bb9e1 · #835be1

#e15b76 · #76e15b

Split-complementary

Open in tool →

#e1835b · #b9e15b

#e15bb9 · #e1c65b · #5be183

Contrast

#5b76e1 as textRatioAAAA largeAAAFix
Aaon white
4.1:1failpassfail
  • AA: use #4e6bdf as the text (4.67:1)
  • AAA: use #2749d3 as the text (7.05:1)
  • AA: or shift the background to #121212 (4.57:1)
Aaon black
5.12:1passpassfail
  • AAA: use #7e93e7 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b76e1 as the background.

Brands using this color

Fonts for this mood

#5b76e1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b76e1
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 #5b76e1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b76e1-9c9fc4-df7c4e-231f2d-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