Color

#615fd3

#615fd3
hex#615fd3
rgbrgb(97, 95, 211)
hslhsl(241, 57%, 60%)
oklchoklch(0.55 0.174 279.8)
Closest name: slateblue (#6a5acd)Relative luminance 0.1543

Colors that go with #615fd3

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 →

#d1d35f

#5f97d3 · #9b5fd3

#d3615f · #5fd361

Split-complementary

Open in tool →

#d39b5f · #97d35f

#d35f97 · #d1d35f · #5fd39b

Contrast

#615fd3 as textRatioAAAA largeAAAFix
Aaon white
5.14:1passpassfail
  • AAA: use #4543cb as the text (7.2:1)
Aaon black
4.09:1failpassfail
  • AA: use #6967d5 as the text (4.5:1)
  • AAA: use #908fe0 as the text (7.19:1)
  • AA: or shift the background to #f0f0f0 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #615fd3 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

#615fd3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #615fd3
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 #615fd3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/615fd3-a19cc4-df9b4e-261f2d-e9edf1?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