Harbour
Open in tool →Steel blue and haze with a buoy orange on a pale grey — the maritime palette every port town uses for a reason.
Color
#283139
#283139
hex
#283139rgb
rgb(40, 49, 57)hsl
hsl(208, 18%, 19%)oklch
oklch(0.308 0.019 245.3)Closest name: Nightmare Fuel (#293135)Relative luminance 0.0294
Colors that go with #283139
Amber, Blue and Blush Pink 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.
Amber #ffbf00
shippedAmber is paired with #283139 in 10 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour.
Blue #0000ff
shipped17 real palettes, including Minecraft's brand system and Headspace's brand system put Blue beside #283139, as the accent.
Blush Pink #e8b4b8
shipped6 real palettes, including Rain Garden and Blush put Blush Pink beside #283139, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #283139 in 5 real palettes, including Polaroid and Coastal, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #283139: 10 real palettes, including Clean Beauty and Coastal, as the lead colour.
Champagne #f7e7ce
shipped8 real palettes, including Darkroom and Forest Floor put Champagne beside #283139, as the surface under it.
Chocolate #d2691e
shippedChocolate shows up next to #283139 in 4 real palettes, including Homestead and Wellness, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #283139 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #283139
Tints & shades
Harmonies
Contrast
| #283139 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 13.22:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.59:1 | 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 #283139 as the background.
Brands using this color
- Vimeosecondary · #23313b · Δ0.8
- Asanaprimary · #273240 · Δ1.221
- Bloombergsecondary · #2b333f · Δ1.277
- Hermèsaccent · #2b333f · Δ1.277
- PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainmentsecondary · #2b333f · Δ1.277
- Dockerprimary · #2c333f · Δ1.367
- Audiprimary · #2c343f · Δ1.506
- Amazonsecondary · #232f3e · Δ1.516
- Raycasttext · #2f3031 · Δ1.676
- Rotten Tomatoesprimary · #2a2c32 · Δ1.772
- UEFAsecondary · #1a313c · Δ1.956
- Minecraftprimary · #313131 · Δ1.969
- Minecrafttext · #313131 · Δ1.969
- Volkswagensecondary · #293043 · Δ1.996
Palettes built around it
Still Water
Open in tool →Dusty teal and mist with a sand accent — low chroma, low contrast between colours, high contrast for text: the recipe for calm.
Dusty Blue
Open in tool →Dusty blue and mist with a nude accent — the quiet wedding palette; nothing here competes with a photograph.
Fonts for this mood
#283139 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #283139
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 #283139 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/283139-9cadc4-df4e51-1f212d-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