Color

#434451

#434451
hex#434451
rgbrgb(67, 68, 81)
hslhsl(236, 9%, 29%)
oklchoklch(0.391 0.022 281.9)
Closest name: Arsenic (#3b444b)Relative luminance 0.0592

Colors that go with #434451

Blue, Blush Pink and Cadet Blue 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 #434451

Tints & shades

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

Harmonies

Complementary

Open in tool →

#515043

#434b51 · #494351

#514344 · #445143

Split-complementary

Open in tool →

#514943 · #4b5143

#51434b · #515043 · #435149

Contrast

#434451 as textRatioAAAA largeAAAFix
Aaon white
9.61:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #727388 as the text (4.52:1)
  • AAA: use #9394a5 as the text (7.02:1)
  • AA: or shift the background to #b3b3b3 (4.59:1)
  • AAA: or shift the background to #dedede (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #434451 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

#434451 reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #434451
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 #434451 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/434451-9e9cc4-df8f4e-241f2d-e9eef1?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