Color

#182da5

#182da5
hex#182da5
rgbrgb(24, 45, 165)
hslhsl(231, 75%, 37%)
oklchoklch(0.379 0.191 267.1)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0479

Colors that go with #182da5

Charcoal, Steel 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 →

#a59018

#1874a5 · #4918a5

#a5182d · #2da518

Split-complementary

Open in tool →

#a54918 · #74a518

#a51874 · #a59018 · #18a549

Contrast

#182da5 as textRatioAAAA largeAAAFix
Aaon white
10.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.96:1failfailfail
  • AA: use #556be7 as the text (4.64:1)
  • AAA: use #8292ed as the text (7.28:1)
  • AA: or shift the background to #a8a8a8 (4.51:1)
  • AAA: or shift the background to #d1d1d1 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #182da5 as the background.

Brands using this color

Fonts for this mood

#182da5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #182da5
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 #182da5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/182da5-9c9ec4-df834e-231f2d-e9eef1?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