Color

#a657ef

#a657ef
hex#a657ef
rgbrgb(166, 87, 239)
hslhsl(271, 83%, 64%)
oklchoklch(0.622 0.221 304.6)
Closest name: Orion Nebula (#a55af4)Relative luminance 0.2116

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a1ef57

#5a57ef · #ef57ed

#efa657 · #57efa6

Split-complementary

Open in tool →

#edef57 · #57ef5a

#ef5a57 · #a1ef57 · #57edef

Contrast

#a657ef as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #9e49ee as the text (4.52:1)
  • AAA: use #7b14db as the text (7.08:1)
  • AA: or shift the background to #141414 (4.59:1)
Aaon black
5.23:1passpassfail
  • AAA: use #ba7cf3 as the text (7.27:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a657ef 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

#a657ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a657ef
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 #a657ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a657ef-b59cc4-c7cb62-2c1f2d-eae9f1?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