Color

#353f5a

#353f5a
hex#353f5a
rgbrgb(53, 63, 90)
hslhsl(224, 26%, 28%)
oklchoklch(0.371 0.049 268.4)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0505

Colors that go with #353f5a

Sea Green, Steel Blue and Dark Olive 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 →

#5a5035

#35515a · #3d355a

#5a353f · #3f5a35

Split-complementary

Open in tool →

#5a3d35 · #515a35

#5a3551 · #5a5035 · #355a3d

Contrast

#353f5a as textRatioAAAA largeAAAFix
Aaon white
10.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #6273a3 as the text (4.5:1)
  • AAA: use #8895b9 as the text (7.05:1)
  • AA: or shift the background to #ababab (4.55:1)
  • AAA: or shift the background to #d4d4d4 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #353f5a as the background.

Brands using this color

Fonts for this mood

#353f5a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #353f5a
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 #353f5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/353f5a-9ca2c4-df724e-221f2d-e9eff1?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