Color

#124cd3

#124cd3
hex#124cd3
rgbrgb(18, 76, 211)
hslhsl(222, 84%, 45%)
oklchoklch(0.478 0.215 263.2)
Closest name: Denim (#1560bd)Relative luminance 0.1

Colors that go with #124cd3

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 →

#d39912

#12add3 · #3912d3

#d3124c · #4cd312

Split-complementary

Open in tool →

#d33912 · #add312

#d312ad · #d39912 · #12d339

Contrast

#124cd3 as textRatioAAAA largeAAAFix
Aaon white
7:1passpassfail
  • AAA: use #124bce as the text (7.18:1)
Aaon black
3:1failpassfail
  • AA: use #356ded as the text (4.56:1)
  • AAA: use #6e95f2 as the text (7.24:1)
  • 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 #124cd3 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#124cd3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #124cd3
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 #124cd3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/124cd3-9ca3c4-df6e4e-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