Color

#103c41

#103c41
hex#103c41
rgbrgb(16, 60, 65)
hslhsl(186, 60%, 16%)
oklchoklch(0.329 0.048 205.8)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0372

Colors that go with #103c41

Crimson, Sienna and Steel 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 →

#411510

#10412e · #102441

#41103c · #3c4110

Split-complementary

Open in tool →

#411024 · #412e10

#2e1041 · #411510 · #244110

Contrast

#103c41 as textRatioAAAA largeAAAFix
Aaon white
12.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #23808b as the text (4.53:1)
  • AAA: use #2da6b4 as the text (7.23:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #103c41 as the background.

Brands using this color

Fonts for this mood

#103c41 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #103c41
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 #103c41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/103c41-a2b8be-df4e86-1f262d-e9f1ee?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