Color

#155d8a

#155d8a
hex#155d8a
rgbrgb(21, 93, 138)
hslhsl(203, 74%, 31%)
oklchoklch(0.459 0.099 242.2)
Closest name: Blue Velvet (#0d6183)Relative luminance 0.0982

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a4115

#158a7c · #15228a

#8a155d · #5d8a15

Split-complementary

Open in tool →

#8a1522 · #8a7c15

#7c158a · #8a4115 · #228a15

Contrast

#155d8a as textRatioAAAA largeAAAFix
Aaon white
7.08:1passpasspassPasses AAA — no fix needed.
Aaon black
2.96:1failfailfail
  • AA: use #1b7bb6 as the text (4.56:1)
  • AAA: use #339ee1 as the text (7.12:1)
  • AA: or shift the background to #cfcfcf (4.55:1)
  • AAA: or shift the background to #ffffff (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #155d8a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#155d8a reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #155d8a
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 #155d8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/155d8a-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