Color

#283271

#283271
hex#283271
rgbrgb(40, 50, 113)
hslhsl(232, 48%, 30%)
oklchoklch(0.346 0.109 272.7)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0392

Colors that go with #283271

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 →

#716728

#285671 · #432871

#712832 · #327128

Split-complementary

Open in tool →

#714328 · #567128

#712856 · #716728 · #287143

Contrast

#283271 as textRatioAAAA largeAAAFix
Aaon white
11.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #606ec7 as the text (4.55:1)
  • AAA: use #8691d5 as the text (7.02:1)
  • AA: or shift the background to #a1a1a1 (4.55:1)
  • AAA: or shift the background to #c9c9c9 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #283271 as the background.

Brands using this color

Fonts for this mood

#283271 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283271
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 #283271 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283271-9c9dc4-df864e-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