Color

#183ed8

#183ed8
hex#183ed8
rgbrgb(24, 62, 216)
hslhsl(228, 80%, 47%)
oklchoklch(0.46 0.235 265.4)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.086

Colors that go with #183ed8

Charcoal, Sea Green and Amber 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 →

#d8b118

#189ed8 · #5118d8

#d8183e · #3ed818

Split-complementary

Open in tool →

#d85118 · #9ed818

#d8189e · #d8b118 · #18d851

Contrast

#183ed8 as textRatioAAAA largeAAAFix
Aaon white
7.72:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #4c6ceb as the text (4.65:1)
  • AAA: use #7a92f0 as the text (7.2:1)
  • AA: or shift the background to #c7c7c7 (4.57:1)
  • AAA: or shift the background to #f5f5f5 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #183ed8 as the background.

Brands using this color

Fonts for this mood

#183ed8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183ed8
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 #183ed8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183ed8-9c9fc4-df7c4e-231f2d-e9eff1?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