Color

#126da5

#126da5
hex#126da5
rgbrgb(18, 109, 165)
hslhsl(203, 80%, 36%)
oklchoklch(0.514 0.118 243.1)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1378

Colors that go with #126da5

Charcoal, Royal Blue and Sienna 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 →

#a54b12

#12a594 · #1223a5

#a5126d · #6da512

Split-complementary

Open in tool →

#a51223 · #a59412

#9412a5 · #a54b12 · #23a512

Contrast

#126da5 as textRatioAAAA largeAAAFix
Aaon white
5.59:1passpassfail
  • AAA: use #0f5b8a as the text (7.28:1)
Aaon black
3.76:1failpassfail
  • AA: use #157cbc as the text (4.64:1)
  • AAA: use #279ee7 as the text (7.13:1)
  • AA: or shift the background to #e8e8e8 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #126da5 as the background.

Brands using this color

Fonts for this mood

#126da5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #126da5
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 #126da5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/126da5-9cb0c4-df4e5d-1f222d-e9f1f0?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