Color

#155ea8

#155ea8
hex#155ea8
rgbrgb(21, 94, 168)
hslhsl(210, 78%, 37%)
oklchoklch(0.481 0.137 253.4)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1099

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a85e15

#15a8a8 · #1515a8

#a8155e · #5ea815

Split-complementary

Open in tool →

#a81515 · #a8a815

#a815a8 · #a85e15 · #15a815

Contrast

#155ea8 as textRatioAAAA largeAAAFix
Aaon white
6.57:1passpassfail
  • AAA: use #14599f as the text (7.1:1)
Aaon black
3.2:1failpassfail
  • AA: use #1a75d1 as the text (4.51:1)
  • AAA: use #4999e9 as the text (7.02:1)
  • AA: or shift the background to #d6d6d6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #155ea8 as the background.

Brands using this color

Fonts for this mood

#155ea8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #155ea8
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 #155ea8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/155ea8-9cabc4-df514e-1f202d-e9f1f1?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