Color

#0f3d76

#0f3d76
hex#0f3d76
rgbrgb(15, 61, 118)
hslhsl(213, 77%, 26%)
oklchoklch(0.364 0.109 256.3)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0475

Colors that go with #0f3d76

Crimson, Teal and Blue 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 →

#75470f

#0f7075 · #140f75

#750f3d · #3d750f

Split-complementary

Open in tool →

#75140f · #70750f

#750f70 · #75470f · #0f7514

Contrast

#0f3d76 as textRatioAAAA largeAAAFix
Aaon white
10.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #1d73dd as the text (4.55:1)
  • AAA: use #5899e9 as the text (7.15:1)
  • AA: or shift the background to #a8a8a8 (4.53:1)
  • AAA: or shift the background to #d1d1d1 (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 #0f3d76 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

#0f3d76 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f3d76
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 #0f3d76 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f3d76-9ca9c4-df584e-1f202d-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