Color

#263b5a

#263b5a
hex#263b5a
rgbrgb(38, 59, 90)
hslhsl(216, 41%, 25%)
oklchoklch(0.35 0.061 258)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0428

Colors that go with #263b5a

Dark Olive Green, Teal and Sienna 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.

Real palettes that use #263b5a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5a4526

#26555a · #2b265a

#5a263b · #3b5a26

Split-complementary

Open in tool →

#5a2b26 · #555a26

#5a2655 · #5a4526 · #265a2b

Contrast

#263b5a as textRatioAAAA largeAAAFix
Aaon white
11.32:1passpasspassPasses AAA — no fix needed.
Aaon black
1.86:1failfailfail
  • AA: use #4b75b4 as the text (4.5:1)
  • AAA: use #7a99c7 as the text (7.21:1)
  • AA: or shift the background to #a6a6a6 (4.65:1)
  • AAA: or shift the background to #cccccc (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #263b5a 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

#263b5a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #263b5a
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 #263b5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/263b5a-9ca7c4-df5f4e-201f2d-e9f0f1?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