Color

#10253d

#10253d
hex#10253d
rgbrgb(16, 37, 61)
hslhsl(212, 58%, 15%)
oklchoklch(0.261 0.053 253.2)
Closest name: Dark Eclipse (#112244)Relative luminance 0.0177

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c2810

#103b3c · #12103c

#3c1025 · #253c10

Split-complementary

Open in tool →

#3c1210 · #3b3c10

#3c103b · #3c2810 · #103c12

Contrast

#10253d as textRatioAAAA largeAAAFix
Aaon white
15.51:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #3376c1 as the text (4.5:1)
  • AAA: use #669ad6 as the text (7.16:1)
  • AA: or shift the background to #8c8c8c (4.61:1)
  • AAA: or shift the background to #b0b0b0 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #10253d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#10253d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #10253d
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 #10253d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/10253d-9caac4-df564e-1f202d-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