Color

#616bff

#616bff
hex#616bff
rgbrgb(97, 107, 255)
hslhsl(236, 100%, 69%)
oklchoklch(0.603 0.216 274.9)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2028

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fff461

#61baff · #a561ff

#ff616b · #6bff61

Split-complementary

Open in tool →

#ffa561 · #baff61

#ff61ba · #fff461 · #61ffa5

Contrast

#616bff as textRatioAAAA largeAAAFix
Aaon white
4.15:1failpassfail
  • AA: use #5762ff as the text (4.57:1)
  • AAA: use #2432ff as the text (7.06:1)
  • AA: or shift the background to #121212 (4.51:1)
Aaon black
5.06:1passpassfail
  • AAA: use #858dff as the text (7.25:1)

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

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

mcpConnect your agent — build around #616bff
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #616bff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/616bff-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