Color

#656ffb

#656ffb
hex#656ffb
rgbrgb(101, 111, 251)
hslhsl(236, 95%, 69%)
oklchoklch(0.61 0.206 275.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.211

Colors that go with #656ffb

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 →

#fbf165

#65bafb · #a665fb

#fb656f · #6ffb65

Split-complementary

Open in tool →

#fba665 · #bafb65

#fb65ba · #fbf165 · #65fba6

Contrast

#656ffb as textRatioAAAA largeAAAFix
Aaon white
4.02:1failpassfail
  • AA: use #5661fb as the text (4.67:1)
  • AAA: use #2432f9 as the text (7.24:1)
  • AA: or shift the background to #141414 (4.58:1)
Aaon black
5.22:1passpassfail
  • AAA: use #838bfc as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #656ffb as the background.

Brands using this color

Fonts for this mood

#656ffb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #656ffb
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 #656ffb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/656ffb-9e9cc4-df8f4e-241f2d-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