Color

#815dd0

#815dd0
hex#815dd0
rgbrgb(129, 93, 208)
hslhsl(259, 55%, 59%)
oklchoklch(0.571 0.171 294.9)
Closest name: slateblue (#6a5acd)Relative luminance 0.1705

Colors that go with #815dd0

Charcoal, Sea Green and Crimson 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 →

#acd05d

#5d72d0 · #bb5dd0

#d0815d · #5dd081

Split-complementary

Open in tool →

#d0bb5d · #72d05d

#d05d72 · #acd05d · #5dd0bb

Contrast

#815dd0 as textRatioAAAA largeAAAFix
Aaon white
4.76:1passpassfail
  • AAA: use #6639c6 as the text (7.08:1)
Aaon black
4.41:1failpassfail
  • AA: use #8461d1 as the text (4.61:1)
  • AAA: use #a388dd as the text (7.12:1)
  • AA: or shift the background to #fafafa (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #815dd0 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

#815dd0 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #815dd0
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 #815dd0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/815dd0-ad9cc4-dfc74e-2a1f2d-e9ebf1?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