Color

#817ea5

#817ea5
hex#817ea5
rgbrgb(129, 126, 165)
hslhsl(245, 18%, 57%)
oklchoklch(0.61 0.059 288)
Closest name: Aster (#867ba9)Relative luminance 0.2231

Colors that go with #817ea5

Charcoal, Copper and Cobalt Blue 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 →

#a2a57e

#7e8ea5 · #957ea5

#a5817e · #7ea581

Split-complementary

Open in tool →

#a5957e · #8ea57e

#a57e8e · #a2a57e · #7ea595

Contrast

#817ea5 as textRatioAAAA largeAAAFix
Aaon white
3.85:1failpassfail
  • AA: use #75729d as the text (4.52:1)
  • AAA: use #575478 as the text (7.13:1)
  • AA: or shift the background to #1a1a1a (4.53:1)
Aaon black
5.46:1passpassfail
  • AAA: use #9593b4 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #817ea5 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #817ea5
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 #817ea5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/817ea5-a49cc4-dfa54e-261f2d-e9ecf1?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