Color

#013583

#013583
hex#013583
rgbrgb(1, 53, 131)
hslhsl(216, 98%, 26%)
oklchoklch(0.354 0.141 259.8)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0419

Colors that go with #013583

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 →

#834f01

#017683 · #0e0183

#830135 · #358301

Split-complementary

Open in tool →

#830e01 · #768301

#830176 · #834f01 · #01830e

Contrast

#013583 as textRatioAAAA largeAAAFix
Aaon white
11.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.84:1failfailfail
  • AA: use #0d6dfd as the text (4.62:1)
  • AAA: use #5397fd as the text (7.21:1)
  • AA: or shift the background to #a3a3a3 (4.53:1)
  • AAA: or shift the background to #cccccc (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #013583 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

#013583 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #013583
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 #013583 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/013583-9ca7c4-df5f4e-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