Color

#153751

#153751
hex#153751
rgbrgb(21, 55, 81)
hslhsl(206, 59%, 20%)
oklchoklch(0.325 0.061 244.4)
Closest name: Beyond the Stars (#0a3251)Relative luminance 0.0349

Tints & shades

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

Harmonies

Complementary

Open in tool →

#512f15

#15514d · #151951

#511537 · #375115

Split-complementary

Open in tool →

#511519 · #514d15

#4d1551 · #512f15 · #195115

Contrast

#153751 as textRatioAAAA largeAAAFix
Aaon white
12.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.7:1failfailfail
  • AA: use #2f7cb6 as the text (4.68:1)
  • AAA: use #559cd3 as the text (7.08:1)
  • AA: or shift the background to #9c9c9c (4.51:1)
  • AAA: or shift the background to #c4c4c4 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #153751 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

#153751 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #153751
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 #153751 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/153751-9caec4-df4e56-1f212d-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