Color

#103b50

#103b50
hex#103b50
rgbrgb(16, 59, 80)
hslhsl(200, 67%, 19%)
oklchoklch(0.334 0.059 234)
Closest name: Maniac Mansion (#004058)Relative luminance 0.0382

Colors that go with #103b50

Crimson, Royal Blue and Teal 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 →

#512610

#105146 · #101b51

#51103b · #3b5110

Split-complementary

Open in tool →

#51101b · #514610

#461051 · #512610 · #1b5110

Contrast

#103b50 as textRatioAAAA largeAAAFix
Aaon white
11.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #227daa as the text (4.58:1)
  • AAA: use #33a0d7 as the text (7.15:1)
  • AA: or shift the background to #a1a1a1 (4.61:1)
  • AAA: or shift the background to #c7c7c7 (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 #103b50 as the background.

Brands using this color

Fonts for this mood

#103b50 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103b50
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 #103b50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103b50-9cb2c4-df4e64-1f232d-e9f1f0?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