Color

#30435f

#30435f
hex#30435f
rgbrgb(48, 67, 95)
hslhsl(216, 33%, 28%)
oklchoklch(0.38 0.054 257.9)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0547

Colors that go with #30435f

Sea Green, Teal and Sienna 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 →

#5f4c30

#305a5f · #35305f

#5f3043 · #435f30

Split-complementary

Open in tool →

#5f3530 · #5a5f30

#5f305a · #5f4c30 · #305f35

Contrast

#30435f as textRatioAAAA largeAAAFix
Aaon white
10.03:1passpasspassPasses AAA — no fix needed.
Aaon black
2.09:1failfailfail
  • AA: use #5577aa as the text (4.61:1)
  • AAA: use #7e98be as the text (7.12:1)
  • AA: or shift the background to #b0b0b0 (4.62:1)
  • AAA: or shift the background to #d9d9d9 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #30435f as the background.

Brands using this color

Fonts for this mood

#30435f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #30435f
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 #30435f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/30435f-9ca7c4-df5f4e-201f2d-e9f0f1?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