Color

#28336c

#28336c
hex#28336c
rgbrgb(40, 51, 108)
hslhsl(230, 46%, 29%)
oklchoklch(0.345 0.099 272)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.039

Colors that go with #28336c

Steel Blue, Blue and Blush Pink 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 →

#6c6128

#28556c · #3f286c

#6c2833 · #336c28

Split-complementary

Open in tool →

#6c3f28 · #556c28

#6c2855 · #6c6128 · #286c3f

Contrast

#28336c as textRatioAAAA largeAAAFix
Aaon white
11.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #5f70c4 as the text (4.6:1)
  • AAA: use #8894d3 as the text (7.22:1)
  • AA: or shift the background to #a1a1a1 (4.57:1)
  • AAA: or shift the background to #c9c9c9 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28336c as the background.

Brands using this color

Fonts for this mood

#28336c reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28336c
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 #28336c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28336c-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