Color

#102a47

#102a47
hex#102a47
rgbrgb(16, 42, 71)
hslhsl(212, 63%, 17%)
oklchoklch(0.281 0.063 253.1)
Closest name: Midnight Ocean (#0f2d4d)Relative luminance 0.0222

Colors that go with #102a47

Charcoal, Firebrick and Sea Green 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 →

#472d10

#104547 · #121047

#47102a · #2a4710

Split-complementary

Open in tool →

#471210 · #454710

#471045 · #472d10 · #104712

Contrast

#102a47 as textRatioAAAA largeAAAFix
Aaon white
14.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.44:1failfailfail
  • AA: use #2e78cc as the text (4.67:1)
  • AAA: use #619adb as the text (7.15:1)
  • AA: or shift the background to #919191 (4.61:1)
  • AAA: or shift the background to #b5b5b5 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #102a47 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#102a47 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #102a47
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 #102a47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/102a47-9caac4-df564e-1f202d-e9f1f1?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