Color

#351c40

#351c40
hex#351c40
rgbrgb(53, 28, 64)
hslhsl(282, 39%, 18%)
oklchoklch(0.278 0.071 314.7)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0196

Colors that go with #351c40

Charcoal, Dark Olive Green and Sea Green 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 →

#27401c

#231c40 · #401c39

#40351c · #1c4035

Split-complementary

Open in tool →

#39401c · #1c4023

#40231c · #27401c · #1c3940

Contrast

#351c40 as textRatioAAAA largeAAAFix
Aaon white
15.09:1passpasspassPasses AAA — no fix needed.
Aaon black
1.39:1failfailfail
  • AA: use #9c5cb7 as the text (4.63:1)
  • AAA: use #b483c9 as the text (7.03:1)
  • AA: or shift the background to #8f8f8f (4.67:1)
  • AAA: or shift the background to #b3b3b3 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #351c40 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#351c40 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #351c40
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 #351c40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/351c40-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