Color

#1e368a

#1e368a
hex#1e368a
rgbrgb(30, 54, 138)
hslhsl(227, 64%, 33%)
oklchoklch(0.371 0.143 266.9)
Closest name: Deep Space Royal (#223382)Relative luminance 0.0475

Colors that go with #1e368a

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 →

#8a731e

#1e6b8a · #3d1e8a

#8a1e36 · #368a1e

Split-complementary

Open in tool →

#8a3d1e · #6b8a1e

#8a1e6b · #8a731e · #1e8a3d

Contrast

#1e368a as textRatioAAAA largeAAAFix
Aaon white
10.77:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #4f6dd8 as the text (4.51:1)
  • AAA: use #7d93e3 as the text (7.15:1)
  • AA: or shift the background to #a8a8a8 (4.53:1)
  • AAA: or shift the background to #d1d1d1 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1e368a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1e368a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1e368a
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 #1e368a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1e368a-9ca0c4-df7a4e-221f2d-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