Color

#40353f

#40353f
hex#40353f
rgbrgb(64, 53, 63)
hslhsl(305, 9%, 23%)
oklchoklch(0.345 0.023 329)
Closest name: After Midnight (#38393f)Relative luminance 0.04

Colors that go with #40353f

Amber, 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 →

#354036

#3c3540 · #40353a

#3f4035 · #353f40

Split-complementary

Open in tool →

#3a4035 · #35403c

#403c35 · #354036 · #353a40

Contrast

#40353f as textRatioAAAA largeAAAFix
Aaon white
11.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #856f84 as the text (4.6:1)
  • AAA: use #a290a1 as the text (7.04:1)
  • AA: or shift the background to #a1a1a1 (4.52:1)
  • AAA: or shift the background to #c9c9c9 (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 #40353f 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

#40353f reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40353f
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 #40353f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40353f-c19fba-8ccb62-2d1f26-eee9f1?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