Color

#104fcb

#104fcb
hex#104fcb
rgbrgb(16, 79, 203)
hslhsl(220, 85%, 43%)
oklchoklch(0.475 0.202 262.1)
Closest name: Denim (#1560bd)Relative luminance 0.1001

Colors that go with #104fcb

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 →

#cb8d10

#10accb · #3010cb

#cb104f · #4fcb10

Split-complementary

Open in tool →

#cb3010 · #accb10

#cb10ac · #cb8d10 · #10cb30

Contrast

#104fcb as textRatioAAAA largeAAAFix
Aaon white
6.99:1passpassfail
  • AAA: use #104dc6 as the text (7.24:1)
Aaon black
3:1failpassfail
  • AA: use #2f6fee as the text (4.63:1)
  • AAA: use #6896f3 as the text (7.25:1)
  • AA: or shift the background to #d1d1d1 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #104fcb as the background.

Brands using this color

Fonts for this mood

#104fcb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #104fcb
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 #104fcb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/104fcb-9ca5c4-df694e-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