Color

#51385c

#51385c
hex#51385c
rgbrgb(81, 56, 92)
hslhsl(282, 24%, 29%)
oklchoklch(0.384 0.067 315.1)
Closest name: Long Passionate Night (#5b365e)Relative luminance 0.0535

Colors that go with #51385c

Sea Green, Blue and Blush Pink 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 →

#435c38

#3f385c · #5c3855

#5c5138 · #385c51

Split-complementary

Open in tool →

#555c38 · #385c3f

#5c3f38 · #435c38 · #38555c

Contrast

#51385c as textRatioAAAA largeAAAFix
Aaon white
10.14:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #9067a2 as the text (4.65:1)
  • AAA: use #aa8ab7 as the text (7.03:1)
  • AA: or shift the background to #adadad (4.52:1)
  • AAA: or shift the background to #d9d9d9 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51385c 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

#51385c reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51385c
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 #51385c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51385c-ba9fc1-b4cb62-2d1f2b-ebe9f1?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