Color

#01038e

#01038e
hex#01038e
rgbrgb(1, 3, 142)
hslhsl(239, 99%, 28%)
oklchoklch(0.295 0.201 264.3)
Closest name: darkblue (#00008b)Relative luminance 0.0202

Colors that go with #01038e

Crimson, Steel Blue and Cobalt 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 →

#8e8c01

#014a8e · #45018e

#8e0103 · #038e01

Split-complementary

Open in tool →

#8e4501 · #4a8e01

#8e014a · #8e8c01 · #018e45

Contrast

#01038e as textRatioAAAA largeAAAFix
Aaon white
14.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.4:1failfailfail
  • AA: use #5d5ffe as the text (4.53:1)
  • AAA: use #8a8cfe as the text (7.26:1)
  • AA: or shift the background to #8f8f8f (4.62:1)
  • AAA: or shift the background to #b3b3b3 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #01038e as the background.

Brands using this color

Fonts for this mood

#01038e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #01038e
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 #01038e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/01038e-a09cc4-df964e-251f2d-e9edf1?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