Color

#10317a

#10317a
hex#10317a
rgbrgb(16, 49, 122)
hslhsl(221, 77%, 27%)
oklchoklch(0.34 0.13 263)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0371

Colors that go with #10317a

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7a5810

#10667a · #23107a

#7a1031 · #317a10

Split-complementary

Open in tool →

#7a2310 · #667a10

#7a1066 · #7a5810 · #107a23

Contrast

#10317a as textRatioAAAA largeAAAFix
Aaon white
12.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #386fe5 as the text (4.57:1)
  • AAA: use #6f96ec as the text (7.25:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10317a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#10317a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10317a
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 #10317a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10317a-9ca4c4-df6b4e-211f2d-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