Color

#102a3d

#102a3d
hex#102a3d
rgbrgb(16, 42, 61)
hslhsl(205, 58%, 15%)
oklchoklch(0.275 0.048 242.9)
Closest name: Eternal Darkness (#1c2841)Relative luminance 0.021

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c2310

#103c39 · #10143c

#3c102a · #2a3c10

Split-complementary

Open in tool →

#3c1014 · #3c3910

#39103c · #3c2310 · #143c10

Contrast

#102a3d as textRatioAAAA largeAAAFix
Aaon white
14.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.42:1failfailfail
  • AA: use #2f7bb1 as the text (4.59:1)
  • AAA: use #529cd1 as the text (7.03:1)
  • AA: or shift the background to #8f8f8f (4.57:1)
  • AAA: or shift the background to #b3b3b3 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #102a3d as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#102a3d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #102a3d
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 #102a3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/102a3d-9cafc4-df4e58-1f212d-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