Color

#1b413e

#1b413e
hex#1b413e
rgbrgb(27, 65, 62)
hslhsl(175, 41%, 18%)
oklchoklch(0.347 0.044 188.5)
Closest name: Botanical Night (#12403c)Relative luminance 0.0436

Colors that go with #1b413e

Crimson, Sea Green and Teal 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 →

#411b1e

#1b412b · #1b3141

#3e1b41 · #413e1b

Split-complementary

Open in tool →

#411b31 · #412b1b

#2b1b41 · #411b1e · #31411b

Contrast

#1b413e as textRatioAAAA largeAAAFix
Aaon white
11.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.87:1failfailfail
  • AA: use #36817b as the text (4.58:1)
  • AAA: use #45a59d as the text (7.12:1)
  • AA: or shift the background to #a6a6a6 (4.61:1)
  • AAA: or shift the background to #cfcfcf (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1b413e as the background.

Brands using this color

Fonts for this mood

#1b413e reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b413e
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 #1b413e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b413e-a2bdbe-d4599f-1f282d-e9f1ed?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