Color

#0b1251

#0b1251
hex#0b1251
rgbrgb(11, 18, 81)
hslhsl(234, 76%, 18%)
oklchoklch(0.232 0.113 269.4)
Closest name: Interstellar Blue (#001155)Relative luminance 0.011

Tints & shades

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

Harmonies

Complementary

Open in tool →

#514a0b

#0b3551 · #270b51

#510b12 · #12510b

Split-complementary

Open in tool →

#51270b · #35510b

#510b35 · #514a0b · #0b5127

Contrast

#0b1251 as textRatioAAAA largeAAAFix
Aaon white
17.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.22:1failfailfail
  • AA: use #5967e8 as the text (4.53:1)
  • AAA: use #8690ee as the text (7.24:1)
  • AA: or shift the background to #858585 (4.67:1)
  • AAA: or shift the background to #a6a6a6 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b1251 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

#0b1251 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b1251
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 #0b1251 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b1251-9d9cc4-df8a4e-241f2d-e9eef1?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