Color

#1d6490

#1d6490
hex#1d6490
rgbrgb(29, 100, 144)
hslhsl(203, 66%, 34%)
oklchoklch(0.482 0.098 241)
Closest name: Blue Velvet (#0d6183)Relative luminance 0.1139

Colors that go with #1d6490

Charcoal, Royal Blue 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 →

#90491d

#1d9083 · #1d2b90

#901d64 · #64901d

Split-complementary

Open in tool →

#901d2b · #90831d

#831d90 · #90491d · #2b901d

Contrast

#1d6490 as textRatioAAAA largeAAAFix
Aaon white
6.41:1passpassfail
  • AAA: use #1b5b83 as the text (7.32:1)
Aaon black
3.28:1failpassfail
  • AA: use #247cb2 as the text (4.6:1)
  • AAA: use #419ed8 as the text (7.11:1)
  • AA: or shift the background to #d9d9d9 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d6490 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1d6490 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d6490
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 #1d6490 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d6490-9cb0c4-df4e5d-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