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
#233443
#233443
hex
#233443rgb
rgb(35, 52, 67)hsl
hsl(208, 31%, 20%)oklch
oklch(0.317 0.035 245.8)Closest name: Blue Whale (#1e3442)Relative luminance 0.0322
Colors that go with #233443
Dark Olive Green, Teal and Sienna 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.
Dark Olive Green #556b2f
split-complementshippedDark Olive Green is a split-complement of #233443: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Teal #008080
analogousshippedTeal is #233443's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #233443 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shippedBlue is paired with #233443 in 4 real palettes, including Readymag's brand system and Monzo's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blush Pink #e8b4b8
shippedBlush Pink is paired with #233443 in 5 real palettes, including Rain Garden and Garden Wedding, as the accent — a combination designers have actually shipped, not a computed rotation.
Burlywood #deb887
shippedBurlywood is paired with #233443 in 4 real palettes, including Coastal and Polaroid, as the accent — a combination designers have actually shipped, not a computed rotation.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #233443: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #233443
Tints & shades
Harmonies
Contrast
| #233443 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.78:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.64:1 | 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 #233443 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#233443 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #233443
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 #233443 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/233443-9cadc4-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