Color

#276391

#276391
hex#276391
rgbrgb(39, 99, 145)
hslhsl(206, 58%, 36%)
oklchoklch(0.483 0.096 245)
Closest name: Blue Velvet (#0d6183)Relative luminance 0.114

Colors that go with #276391

Charcoal, Royal Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#915527

#27918a · #272e91

#912763 · #639127

Split-complementary

Open in tool →

#91272e · #918a27

#8a2791 · #915527 · #2e9127

Contrast

#276391 as textRatioAAAA largeAAAFix
Aaon white
6.4:1passpassfail
  • AAA: use #235b85 as the text (7.22:1)
Aaon black
3.28:1failpassfail
  • AA: use #307cb5 as the text (4.68:1)
  • AAA: use #569cd2 as the text (7.08:1)
  • AA: or shift the background to #d9d9d9 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #276391 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#276391 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #276391
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 #276391 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/276391-9caec4-df4e56-1f212d-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