Color

#153c41

#153c41
hex#153c41
rgbrgb(21, 60, 65)
hslhsl(187, 51%, 17%)
oklchoklch(0.331 0.044 206.8)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0377

Tints & shades

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

Harmonies

Complementary

Open in tool →

#411a15

#154131 · #152641

#41153c · #3c4115

Split-complementary

Open in tool →

#411526 · #413115

#311541 · #411a15 · #264115

Contrast

#153c41 as textRatioAAAA largeAAAFix
Aaon white
11.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #2d808b as the text (4.57:1)
  • AAA: use #39a3b1 as the text (7.05:1)
  • AA: or shift the background to #a1a1a1 (4.63:1)
  • AAA: or shift the background to #c7c7c7 (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 #153c41 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

#153c41 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #153c41
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 #153c41 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/153c41-a2b8be-df4e83-1f262d-e9f1ee?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