Color

#1a2138

#1a2138
hex#1a2138
rgbrgb(26, 33, 56)
hslhsl(226, 37%, 16%)
oklchoklch(0.253 0.045 270.1)
Closest name: Eclipse Elixir (#1f2133)Relative luminance 0.0159

Colors that go with #1a2138

Charcoal, Dark Olive Green and Sea Green 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 →

#38311a

#1a3038 · #221a38

#381a21 · #21381a

Split-complementary

Open in tool →

#38221a · #30381a

#381a30 · #38311a · #1a3822

Contrast

#1a2138 as textRatioAAAA largeAAAFix
Aaon white
15.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #5e73b5 as the text (4.6:1)
  • AAA: use #8594c7 as the text (7.06:1)
  • AA: or shift the background to #8a8a8a (4.61:1)
  • AAA: or shift the background to #adadad (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a2138 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1a2138 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a2138
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 #1a2138 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a2138-9ca1c4-df774e-221f2d-e9eff1?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