Color

#283471

#283471
hex#283471
rgbrgb(40, 52, 113)
hslhsl(230, 48%, 30%)
oklchoklch(0.351 0.106 271.5)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.041

Colors that go with #283471

Steel Blue, Blue and Cobalt 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#716528

#285971 · #402871

#712834 · #347128

Split-complementary

Open in tool →

#714028 · #597128

#712859 · #716528 · #287140

Contrast

#283471 as textRatioAAAA largeAAAFix
Aaon white
11.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.82:1failfailfail
  • AA: use #5d6ec6 as the text (4.51:1)
  • AAA: use #8693d5 as the text (7.15:1)
  • AA: or shift the background to #a3a3a3 (4.57:1)
  • AAA: or shift the background to #cccccc (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283471 as the background.

Brands using this color

Fonts for this mood

#283471 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283471
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 #283471 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283471-9c9ec4-df814e-231f2d-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