Color

#3a424a

#3a424a
hex#3a424a
rgbrgb(58, 66, 74)
hslhsl(210, 12%, 26%)
oklchoklch(0.375 0.017 248.3)
Closest name: Arsenic (#3b444b)Relative luminance 0.0529

Colors that go with #3a424a

Blue, Blush Pink and Burlywood 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.

Real palettes that use #3a424a

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#4a423a

#3a4a4a · #3a3a4a

#4a3a42 · #424a3a

Split-complementary

Open in tool →

#4a3a3a · #4a4a3a

#4a3a4a · #4a423a · #3a4a3a

Contrast

#3a424a as textRatioAAAA largeAAAFix
Aaon white
10.2:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #697886 as the text (4.63:1)
  • AAA: use #8d99a5 as the text (7.23:1)
  • AA: or shift the background to #adadad (4.55:1)
  • AAA: or shift the background to #d6d6d6 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a424a 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

#3a424a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a424a
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 #3a424a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a424a-9cabc4-df514e-1f202d-e9f1f1?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