Color
#150a4d
#150a4drgb(21, 10, 77)hsl(250, 77%, 17%)oklch(0.221 0.113 279.2)Colors that go with #150a4d
Charcoal, Sea Green 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #150a4d: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with #150a4d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #150a4d'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 #150a4d in 7 real palettes, including Southwest Airlines's brand system and Blueprint, as the accent.
Blue #0000ff
shipped11 real palettes, including Penpot's brand system and Monzo's brand system put Blue beside #150a4d, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #150a4d: 9 real palettes, including SoFi's brand system and Arctic, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #150a4d: 15 real palettes, including Glacier and Air France's brand system, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #150a4d: 4 real palettes, including Dusk and Bramble, as the accent.
Real palettes that use #150a4d
Tints & shades
Harmonies
Contrast
| #150a4d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 17.76:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.18:1 | 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 #150a4d as the background.
Brands using this color
Fonts for this mood
#150a4d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
Point 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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #150a4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/150a4d-a79cc4-dfb14e-281f2d-e9ecf1?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