Color

#616bf5

#616bf5
hex#616bf5
rgbrgb(97, 107, 245)
hslhsl(236, 88%, 67%)
oklchoklch(0.596 0.204 275.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1965

Colors that go with #616bf5

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 →

#f5eb61

#61b5f5 · #a161f5

#f5616b · #6bf561

Split-complementary

Open in tool →

#f5a161 · #b5f561

#f561b5 · #f5eb61 · #61f5a1

Contrast

#616bf5 as textRatioAAAA largeAAAFix
Aaon white
4.26:1failpassfail
  • AA: use #5762f4 as the text (4.71:1)
  • AAA: use #2c39f2 as the text (7.06:1)
  • AA: or shift the background to #0d0d0d (4.56:1)
Aaon black
4.93:1passpassfail
  • AAA: use #878ff7 as the text (7.3:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #616bf5 as the background.

Brands using this color

Fonts for this mood

#616bf5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #616bf5
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 #616bf5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/616bf5-9e9cc4-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