Color

#284c52

#284c52
hex#284c52
rgbrgb(40, 76, 82)
hslhsl(189, 34%, 24%)
oklchoklch(0.392 0.043 209.4)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0623

Colors that go with #284c52

Steel Blue, Teal and Rust 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 →

#522f28

#285243 · #283752

#52284c · #4c5228

Split-complementary

Open in tool →

#522837 · #524328

#432852 · #522f28 · #375228

Contrast

#284c52 as textRatioAAAA largeAAAFix
Aaon white
9.35:1passpasspassPasses AAA — no fix needed.
Aaon black
2.25:1failfailfail
  • AA: use #437e89 as the text (4.58:1)
  • AAA: use #58a0ad as the text (7.05:1)
  • AA: or shift the background to #b5b5b5 (4.56:1)
  • AAA: or shift the background to #e0e0e0 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #284c52 as the background.

Brands using this color

Fonts for this mood

#284c52 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #284c52
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 #284c52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/284c52-a2b7be-df4e7e-1f252d-e9f1ee?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