Color

#283e76

#283e76
hex#283e76
rgbrgb(40, 62, 118)
hslhsl(223, 49%, 31%)
oklchoklch(0.377 0.1 265.7)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.052

Colors that go with #283e76

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 →

#766028

#286576 · #392876

#76283e · #3e7628

Split-complementary

Open in tool →

#763928 · #657628

#762865 · #766028 · #287639

Contrast

#283e76 as textRatioAAAA largeAAAFix
Aaon white
10.29:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #5474c4 as the text (4.67:1)
  • AAA: use #7e96d3 as the text (7.19:1)
  • AA: or shift the background to #adadad (4.59:1)
  • AAA: or shift the background to #d6d6d6 (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 #283e76 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

#283e76 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #283e76
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 #283e76 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/283e76-9ca3c4-df704e-211f2d-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