Color

#101a37

#101a37
hex#101a37
rgbrgb(16, 26, 55)
hslhsl(225, 55%, 14%)
oklchoklch(0.226 0.058 267.4)
Closest name: Dark Knight (#151931)Relative luminance 0.0112

Colors that go with #101a37

Charcoal, Dark Olive Green 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 →

#372e10

#102e37 · #1a1037

#37101a · #1a3710

Split-complementary

Open in tool →

#371a10 · #2e3710

#37102e · #372e10 · #10371a

Contrast

#101a37 as textRatioAAAA largeAAAFix
Aaon white
17.14:1passpasspassPasses AAA — no fix needed.
Aaon black
1.22:1failfailfail
  • AA: use #5170cd as the text (4.55:1)
  • AAA: use #7d94d9 as the text (7.11:1)
  • AA: or shift the background to #858585 (4.65:1)
  • AAA: or shift the background to #a6a6a6 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #101a37 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#101a37 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #101a37
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 #101a37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/101a37-9ca1c4-df754e-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