Color

#03075e

#03075e
hex#03075e
rgbrgb(3, 7, 94)
hslhsl(237, 94%, 19%)
oklchoklch(0.229 0.143 265.8)
Closest name: Alone in the Dark (#000066)Relative luminance 0.0098

Colors that go with #03075e

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.

Real palettes that use #03075e

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#5e5903

#03355e · #2c035e

#5e0307 · #075e03

Split-complementary

Open in tool →

#5e2c03 · #355e03

#5e0335 · #5e5903 · #035e2c

Contrast

#03075e as textRatioAAAA largeAAAFix
Aaon white
17.56:1passpasspassPasses AAA — no fix needed.
Aaon black
1.2:1failfailfail
  • AA: use #5c64fa as the text (4.66:1)
  • AAA: use #888efb as the text (7.31:1)
  • AA: or shift the background to #828282 (4.57:1)
  • AAA: or shift the background to #a6a6a6 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03075e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#03075e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03075e
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 #03075e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03075e-9f9cc4-df924e-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