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Color
#172145
#172145
hex
#172145rgb
rgb(23, 33, 69)hsl
hsl(227, 50%, 18%)oklch
oklch(0.26 0.069 269.5)Closest name: Dark Eclipse (#112244)Relative luminance 0.017
Colors that go with #172145
Charcoal, Dark Olive Green and Sea Green 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 for #172145: softer than #000 and cool enough to feel like part of the same palette.
Dark Olive Green #556b2f
complementaryshippedDark Olive Green sits directly opposite #172145 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #172145 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Sienna #a0522d
split-complementshippedSienna is a split-complement of #172145: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Slate Blue #6a5acd
analogousshippedSlate Blue is #172145's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Steel Blue #4682b4
analogousshippedSteel Blue is #172145's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #172145 in 14 real palettes, including Beach Hut and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #172145 in 22 real palettes, including Monzo's brand system and Sketch's brand system, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #172145
Tints & shades
Harmonies
Contrast
| #172145 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 15.67:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.34:1 | 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 #172145 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#172145 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #172145
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 #172145 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/172145-9ca0c4-df7a4e-221f2d-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