Color

#1a404d

#1a404d
hex#1a404d
rgbrgb(26, 64, 77)
hslhsl(195, 50%, 20%)
oklchoklch(0.35 0.048 223.3)
Closest name: Cold and Dark (#154250)Relative luminance 0.0442

Colors that go with #1a404d

Crimson, Steel Blue 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 →

#4d261a

#1a4d40 · #1a264d

#4d1a40 · #404d1a

Split-complementary

Open in tool →

#4d1a26 · #4d401a

#401a4d · #4d261a · #264d1a

Contrast

#1a404d as textRatioAAAA largeAAAFix
Aaon white
11.14:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #338099 as the text (4.69:1)
  • AAA: use #44a1c1 as the text (7.11:1)
  • AA: or shift the background to #a6a6a6 (4.58:1)
  • AAA: or shift the background to #cfcfcf (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 #1a404d as the background.

Brands using this color

Fonts for this mood

#1a404d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a404d
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 #1a404d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a404d-9cb5c4-df4e70-1f242d-e9f1ef?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