Tide Pool
Open in tool →Sea-green and slate with a coral — a literal tide pool: two cool tones, one warm creature.
Color
#2f3151
#2f3151
hex
#2f3151rgb
rgb(47, 49, 81)hsl
hsl(236, 27%, 25%)oklch
oklch(0.327 0.056 280.1)Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.034
Colors that go with #2f3151
Dark Olive Green, Sienna and Steel 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.
Dark Olive Green #556b2f
complementaryshippedDark Olive Green sits directly opposite #2f3151 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sienna #a0522d
split-complementshippedSienna is a split-complement of #2f3151: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
analogousshippedSteel Blue is #2f3151's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
triadicshippedTeal completes a triad with #2f3151 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Blue #0000ff
shippedBlue is paired with #2f3151 in 11 real palettes, including Sketch's brand system and Alaska Airlines's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Blush Pink #e8b4b8
shippedBlush Pink is paired with #2f3151 in 5 real palettes, including Rain Garden and Blush, as the accent — a combination designers have actually shipped, not a computed rotation.
Burlywood #deb887
shippedBurlywood is paired with #2f3151 in 5 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 #2f3151: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #2f3151
Tints & shades
Harmonies
Contrast
| #2f3151 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.51:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.68:1 | 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 #2f3151 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#2f3151 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2f3151
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 #2f3151 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2f3151-9e9cc4-df8f4e-241f2d-e9eef1?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