The Ash circa Deadened Plunging
About this color
The Ash circa Deadened Plunging presents itself as a deep, intense blue shade, sitting at #00151d in the 24-bit RGB space.
#00151dRGB(0, 21, 29)
HSL 197° · 100% saturation · 6% lightness
Psychology
Dark blues project authority, depth and reliability — the colour of deep water, the night sky, and tailored suits.
History
Blue has been among the most valued pigments throughout history — ultramarine, ground from lapis lazuli, was once worth more than gold and reserved for the robes of the Virgin Mary in medieval painting.
Design use
In practical terms, a deep blue like this works well as a grounding element in print design — covers, footers, section dividers. On screen it suits dashboards and interfaces where a serious tone matters.
Colour pairings
In terms of colour combinations, complement this blue with amber and warm orange for high-contrast energy, or stay within blue-green and violet neighbours for a serene, cohesive feel.
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