Color

#156da8

#156da8
hex#156da8
rgbrgb(21, 109, 168)
hslhsl(204, 78%, 37%)
oklchoklch(0.516 0.121 244.8)
Closest name: Brilliant Blue (#0075b3)Relative luminance 0.1392

Colors that go with #156da8

Charcoal, Sienna and Amber 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 →

#a85015

#15a899 · #1523a8

#a8156d · #6da815

Split-complementary

Open in tool →

#a81523 · #a89915

#9915a8 · #a85015 · #23a815

Contrast

#156da8 as textRatioAAAA largeAAAFix
Aaon white
5.55:1passpassfail
  • AAA: use #115b8d as the text (7.23:1)
Aaon black
3.78:1failpassfail
  • AA: use #187cbf as the text (4.67:1)
  • AAA: use #2e9ce5 as the text (7:1)
  • AA: or shift the background to #e8e8e8 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #156da8 as the background.

Brands using this color

Fonts for this mood

#156da8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #156da8
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 #156da8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/156da8-9cafc4-df4e5a-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