Color

#013b98

#013b98
hex#013b98
rgbrgb(1, 59, 152)
hslhsl(217, 99%, 30%)
oklchoklch(0.386 0.162 260.6)
Closest name: Blue Hour (#0034ab)Relative luminance 0.054

Colors that go with #013b98

Charcoal, Crimson and Steel 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 →

#985e01

#018798 · #120198

#98013b · #3b9801

Split-complementary

Open in tool →

#981201 · #879801

#980187 · #985e01 · #019812

Contrast

#013b98 as textRatioAAAA largeAAAFix
Aaon white
10.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.08:1failfailfail
  • AA: use #106bfe as the text (4.56:1)
  • AAA: use #5294fe as the text (7.03:1)
  • AA: or shift the background to #b0b0b0 (4.65:1)
  • AAA: or shift the background to #d9d9d9 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #013b98 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#013b98 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #013b98
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 #013b98 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/013b98-9ca7c4-df624e-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