Color

#13383e

#13383e
hex#13383e
rgbrgb(19, 56, 62)
hslhsl(188, 53%, 16%)
oklchoklch(0.317 0.043 209.7)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0331

Colors that go with #13383e

Rust, Sienna 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 →

#3e1913

#133e2f · #13233e

#3e1339 · #393e13

Split-complementary

Open in tool →

#3e1323 · #3e2f13

#2f133e · #3e1913 · #233e13

Contrast

#13383e as textRatioAAAA largeAAAFix
Aaon white
12.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.66:1failfailfail
  • AA: use #2b7f8c as the text (4.52:1)
  • AAA: use #37a3b3 as the text (7.05:1)
  • AA: or shift the background to #9c9c9c (4.6:1)
  • AAA: or shift the background to #c2c2c2 (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 #13383e as the background.

Brands using this color

Fonts for this mood

#13383e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #13383e
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 #13383e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/13383e-a2b7be-df4e81-1f252d-e9f1ee?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