Color

#1a4375

#1a4375
hex#1a4375
rgbrgb(26, 67, 117)
hslhsl(213, 64%, 28%)
oklchoklch(0.382 0.097 255.1)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0552

Colors that go with #1a4375

Crimson, Teal and Blue 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 →

#754c1a

#1a7175 · #1e1a75

#751a43 · #43751a

Split-complementary

Open in tool →

#751e1a · #71751a

#751a71 · #754c1a · #1a751e

Contrast

#1a4375 as textRatioAAAA largeAAAFix
Aaon white
9.98:1passpasspassPasses AAA — no fix needed.
Aaon black
2.1:1failfailfail
  • AA: use #2d75cd as the text (4.54:1)
  • AAA: use #6098dc as the text (7.02:1)
  • AA: or shift the background to #b0b0b0 (4.6:1)
  • AAA: or shift the background to #d9d9d9 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a4375 as the background.

Brands using this color

Fonts for this mood

#1a4375 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a4375
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 #1a4375 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a4375-9ca9c4-df584e-1f202d-e9f0f1?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