Color

#615bcd

#615bcd
hex#615bcd
rgbrgb(97, 91, 205)
hslhsl(243, 53%, 58%)
oklchoklch(0.538 0.171 281.3)
Closest name: slateblue (#6a5acd)Relative luminance 0.1443

Colors that go with #615bcd

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 →

#c7cd5b

#5b8ecd · #9a5bcd

#cd615b · #5bcd61

Split-complementary

Open in tool →

#cd9a5b · #8ecd5b

#cd5b8e · #c7cd5b · #5bcd9a

Contrast

#615bcd as textRatioAAAA largeAAAFix
Aaon white
5.4:1passpassfail
  • AAA: use #4a44c5 as the text (7.18:1)
Aaon black
3.89:1failpassfail
  • AA: use #706bd1 as the text (4.71:1)
  • AAA: use #928edc as the text (7.12:1)
  • AA: or shift the background to #ebebeb (4.53:1)

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

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

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

tool url/palettes/new/615bcd-a39cc4-dfa04e-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