Color

#283671

#283671
hex#283671
rgbrgb(40, 54, 113)
hslhsl(228, 48%, 30%)
oklchoklch(0.355 0.103 270.4)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0428

Colors that go with #283671

Steel Blue, Blue and Crimson 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 →

#716328

#285b71 · #3e2871

#712836 · #367128

Split-complementary

Open in tool →

#713e28 · #5b7128

#71285b · #716328 · #28713e

Contrast

#283671 as textRatioAAAA largeAAAFix
Aaon white
11.31:1passpasspassPasses AAA — no fix needed.
Aaon black
1.86:1failfailfail
  • AA: use #5d72c6 as the text (4.69:1)
  • AAA: use #8293d3 as the text (7.06:1)
  • AA: or shift the background to #a6a6a6 (4.65:1)
  • AAA: or shift the background to #cccccc (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283671 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

#283671 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283671
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 #283671 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283671-9c9fc4-df7c4e-231f2d-e9eff1?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