Color

#5b315e

#5b315e
hex#5b315e
rgbrgb(91, 49, 94)
hslhsl(296, 31%, 28%)
oklchoklch(0.385 0.09 324.7)
Closest name: Long Passionate Night (#5b365e)Relative luminance 0.0523

Colors that go with #5b315e

Sea Green, Crimson and Denim 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 →

#345e31

#44315e · #5e314a

#5e5b31 · #315e5b

Split-complementary

Open in tool →

#4a5e31 · #315e44

#5e4431 · #345e31 · #314a5e

Contrast

#5b315e as textRatioAAAA largeAAAFix
Aaon white
10.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.05:1failfailfail
  • AA: use #a45ba9 as the text (4.65:1)
  • AAA: use #ba83be as the text (7.08:1)
  • AA: or shift the background to #adadad (4.57:1)
  • AAA: or shift the background to #d6d6d6 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b315e 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

#5b315e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b315e
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 #5b315e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b315e-c19fbf-9ccb62-2d1f28-ede9f1?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