Color

#133f3a

#133f3a
hex#133f3a
rgbrgb(19, 63, 58)
hslhsl(173, 54%, 16%)
oklchoklch(0.336 0.049 184.8)
Closest name: Botanical Night (#12403c)Relative luminance 0.04

Colors that go with #133f3a

Sea Green, Teal and Amber 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 →

#3f1318

#133f24 · #132e3f

#3a133f · #3f3a13

Split-complementary

Open in tool →

#3f132e · #3f2413

#24133f · #3f1318 · #2e3f13

Contrast

#133f3a as textRatioAAAA largeAAAFix
Aaon white
11.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #278277 as the text (4.55:1)
  • AAA: use #32a99b as the text (7.28:1)
  • AA: or shift the background to #a1a1a1 (4.52:1)
  • AAA: or shift the background to #c9c9c9 (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 #133f3a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#133f3a reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #133f3a
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 #133f3a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/133f3a-a2bebe-d459a3-1f292d-e9f1ec?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