Color

#5b76fb

#5b76fb
hex#5b76fb
rgbrgb(91, 118, 251)
hslhsl(230, 95%, 67%)
oklchoklch(0.617 0.2 270.8)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2215

Colors that go with #5b76fb

Charcoal, Red and Sea Green 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 →

#fbe05b

#5bc5fb · #905bfb

#fb5b76 · #76fb5b

Split-complementary

Open in tool →

#fb905b · #c5fb5b

#fb5bc5 · #fbe05b · #5bfb90

Contrast

#5b76fb as textRatioAAAA largeAAAFix
Aaon white
3.87:1failpassfail
  • AA: use #4765fa as the text (4.66:1)
  • AAA: use #1037f9 as the text (7.15:1)
  • AA: or shift the background to #171717 (4.63:1)
Aaon black
5.43:1passpassfail
  • AAA: use #798ffc as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b76fb 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

#5b76fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b76fb
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 #5b76fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b76fb-9c9ec4-df814e-231f2d-e9eef1?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