Color

#263f5a

#263f5a
hex#263f5a
rgbrgb(38, 63, 90)
hslhsl(211, 41%, 25%)
oklchoklch(0.36 0.056 251.4)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0471

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5a4126

#26595a · #26265a

#5a263f · #3f5a26

Split-complementary

Open in tool →

#5a2626 · #595a26

#5a2659 · #5a4126 · #265a26

Contrast

#263f5a as textRatioAAAA largeAAAFix
Aaon white
10.82:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #4879ad as the text (4.61:1)
  • AAA: use #739ac4 as the text (7.15:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (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 #263f5a as the background.

Brands using this color

Fonts for this mood

#263f5a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #263f5a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #263f5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/263f5a-9cabc4-df534e-1f202d-e9f1f1?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