Color

#1e4657

#1e4657
hex#1e4657
rgbrgb(30, 70, 87)
hslhsl(198, 49%, 23%)
oklchoklch(0.373 0.053 228.5)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0534

Colors that go with #1e4657

Royal Blue, Teal and Sienna 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 →

#572f1e

#1e574c · #1e2957

#571e46 · #46571e

Split-complementary

Open in tool →

#571e29 · #574c1e

#4c1e57 · #572f1e · #29571e

Contrast

#1e4657 as textRatioAAAA largeAAAFix
Aaon white
10.15:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #357d9c as the text (4.56:1)
  • AAA: use #4c9fc2 as the text (7.05:1)
  • AA: or shift the background to #adadad (4.52:1)
  • AAA: or shift the background to #d9d9d9 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1e4657 as the background.

Brands using this color

Fonts for this mood

#1e4657 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1e4657
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 #1e4657 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1e4657-9cb3c4-df4e69-1f232d-e9f1f0?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