Color

#156bf4

#156bf4
hex#156bf4
rgbrgb(21, 107, 244)
hslhsl(217, 91%, 52%)
oklchoklch(0.566 0.22 260.4)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1721

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#f49f15

#15daf4 · #2f15f4

#f4156b · #6bf415

Split-complementary

Open in tool →

#f42f15 · #daf415

#f415da · #f49f15 · #15f42f

Contrast

#156bf4 as textRatioAAAA largeAAAFix
Aaon white
4.73:1passpassfail
  • AAA: use #0950c3 as the text (7.13:1)
Aaon black
4.44:1failpassfail
  • AA: use #1a6ef4 as the text (4.58:1)
  • AAA: use #5996f7 as the text (7.13:1)
  • AA: or shift the background to #fafafa (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 #156bf4 as the background.

Brands using this color

Fonts for this mood

#156bf4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #156bf4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #156bf4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/156bf4-9ca7c4-df624e-201f2d-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