Color

#10429d

#10429d
hex#10429d
rgbrgb(16, 66, 157)
hslhsl(219, 82%, 34%)
oklchoklch(0.408 0.157 261.3)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0644

Colors that go with #10429d

Charcoal, Crimson 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 →

#9e6c10

#10889e · #25109e

#9e1041 · #419e10

Split-complementary

Open in tool →

#9e2510 · #889e10

#9e1088 · #9e6c10 · #109e25

Contrast

#10429d as textRatioAAAA largeAAAFix
Aaon white
9.18:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #2e70ea as the text (4.62:1)
  • AAA: use #6696f0 as the text (7.19:1)
  • AA: or shift the background to #b8b8b8 (4.63:1)
  • AAA: or shift the background to #e3e3e3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10429d 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

#10429d reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10429d
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 #10429d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10429d-9ca5c4-df664e-211f2d-e9f0f1?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