Color

#1a577a

#1a577a
hex#1a577a
rgbrgb(26, 87, 122)
hslhsl(202, 65%, 29%)
oklchoklch(0.436 0.084 238.6)
Closest name: Beyond the Sea (#005784)Relative luminance 0.0844

Colors that go with #1a577a

Crimson, Royal Blue 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 →

#7a3d1a

#1a7a6d · #1a277a

#7a1a57 · #577a1a

Split-complementary

Open in tool →

#7a1a27 · #7a6d1a

#6d1a7a · #7a3d1a · #277a1a

Contrast

#1a577a as textRatioAAAA largeAAAFix
Aaon white
7.81:1passpasspassPasses AAA — no fix needed.
Aaon black
2.69:1failfailfail
  • AA: use #257bad as the text (4.52:1)
  • AAA: use #3d9ed6 as the text (7.06:1)
  • AA: or shift the background to #c7c7c7 (4.62:1)
  • AAA: or shift the background to #f5f5f5 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a577a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#1a577a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a577a
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 #1a577a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a577a-9cb1c4-df4e5f-1f222d-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