Alpine
Open in tool →Glacier blue with a safety-orange accent: technical outdoor gear, not lifestyle.
Color
#181d2a
#181d2a
hex
#181d2argb
rgb(24, 29, 42)hsl
hsl(223, 27%, 13%)oklch
oklch(0.232 0.026 268.1)Closest name: Night Demons (#201b20)Relative luminance 0.0124
Colors that go with #181d2a
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 #181d2a without the hard edge of pure #000.
Amber #ffbf00
shippedAmber is paired with #181d2a in 18 real palettes, including Google's brand system and Blueprint, as the accent.
Blue #0000ff
shipped23 real palettes, including Signal's brand system and Warp's brand system put Blue beside #181d2a, as the supporting colour.
Blue Violet #8a2be2
shippedBlue Violet is paired with #181d2a in 10 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Blush Pink #e8b4b8
shipped5 real palettes, including Graphite Mono and Estate put Blush Pink beside #181d2a, as the accent.
Brown #a52a2a
shipped5 real palettes, including Woodsmoke and State Farm's brand system put Brown beside #181d2a, as the accent.
Burgundy #800020
shipped4 real palettes, including Qatar Airways's brand system and Mailchimp's brand system put Burgundy beside #181d2a, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #181d2a in 6 real palettes, including Coffee Bar and Kiln, as the accent.
Real palettes that use #181d2a
Tints & shades
Harmonies
Contrast
| #181d2a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 16.83:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.25:1 | 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 #181d2a as the background.
Brands using this color
- Airtableaccent · #181d26 · Δ0.797
- Audisecondary · #181d25 · Δ0.996
- Formula 1text · #1c1c25 · Δ1.113
- Asanasecondary · #151b26 · Δ1.126
- NFLaccent · #172029 · Δ1.162
- Boxtext · #151f26 · Δ1.318
- Qatar Airwayssecondary · #181825 · Δ1.806
- Qatar Airwaysprimary · #1f212b · Δ1.976
- Qatar Airwaystext · #1f212b · Δ1.976
Palettes built around it
Arctic
Open in tool →Navy type on white with an ice-blue accent: crisp and corporate without going grey.
Pastel Pop
Open in tool →Pastels pushed to the saturated end — pink, sky and lemon — for brands that want soft AND loud.
Fonts for this mood
#181d2a reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #181d2a
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 #181d2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/181d2a-9ca3c4-df704e-211f2d-e9eff1?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