Color

#263a87

#263a87
hex#263a87
rgbrgb(38, 58, 135)
hslhsl(228, 56%, 34%)
oklchoklch(0.38 0.131 268.5)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0519

Tints & shades

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

Harmonies

Complementary

Open in tool →

#877426

#266a87 · #432687

#87263a · #3a8726

Split-complementary

Open in tool →

#874326 · #6a8726

#87266a · #877426 · #268743

Contrast

#263a87 as textRatioAAAA largeAAAFix
Aaon white
10.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #5870d0 as the text (4.64:1)
  • AAA: use #8092db as the text (7.05:1)
  • AA: or shift the background to #adadad (4.59:1)
  • AAA: or shift the background to #d6d6d6 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #263a87 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

#263a87 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #263a87
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 #263a87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/263a87-9c9fc4-df7c4e-231f2d-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