Alpine
Open in tool →Glacier blue with a safety-orange accent: technical outdoor gear, not lifestyle.
Color
#15212d
#15212d
hex
#15212drgb
rgb(21, 33, 45)hsl
hsl(210, 36%, 13%)oklch
oklch(0.243 0.029 249.1)Closest name: Dark (#1b2431)Relative luminance 0.0144
Colors that go with #15212d
Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black that reads cleanly against #15212d without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #15212d in 18 real palettes, including Wikipedia's brand system and Google's brand system, as the accent.
Blue #0000ff
shipped23 real palettes, including Monzo's brand system and Bumble's brand system put Blue beside #15212d, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #15212d in 10 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Blush Pink #e8b4b8
shipped6 real palettes, including Graphite Mono and Estate put Blush Pink beside #15212d, as the accent.
Brown #a52a2a
shipped5 real palettes, including Woodsmoke and Typewriter put Brown beside #15212d, as the accent.
Burgundy #800020
shipped4 real palettes, including Qatar Airways's brand system and Mailchimp's brand system put Burgundy beside #15212d, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #15212d in 6 real palettes, including Coastal and Chalkboard, as the accent.
Real palettes that use #15212d
Tints & shades
Harmonies
Contrast
| #15212d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 16.31:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.29:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15212d as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#15212d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #15212d
live endpointPoint any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #15212d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/15212d-9cabc4-df514e-1f202d-e9f1f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md