Storm gray to white peak — eight steps through the overcast sky
Storm Gray
#384048
rgb(56, 64, 72)
Lead-gray of an approaching weather system — heavy and substantial
Pewter Sky
#5A7090
rgb(90, 112, 144)
Cool pewter blue of a fully overcast sky with dominant cloud cover
Blue Cloud
#90A8C0
rgb(144, 168, 192)
Mid-value cloud blue — where the sky's blue identity dominates its gray weight
Silver Cloud
#B0C0CC
rgb(176, 192, 204)
Pale silver of a thinning cloud layer — cool and refined
Light Cloud
#D0D8E0
rgb(208, 216, 224)
High thin cloud — bright enough to suggest sun behind the layer
Cirrus
#E2E8EE
rgb(226, 232, 238)
Ice crystal cirrus — the highest and brightest layer of thin cloud
Pale Sky
#EEF2F6
rgb(238, 242, 246)
Near-white pale sky — cloud barely visible, maximum diffused brightness
White Peak
#F8FAFB
rgb(248, 250, 251)
Near-pure white — the brightest overexposed surface in direct cloud backlight
An overcast sky contains more tonal complexity than it receives credit for. From the lead-gray base of storm clouds to the bright near-white of cirrus, the sky presents a complete eight-stop luminosity range in cool blue-gray — the same range a photographer discovers when shooting exclusively on overcast days and noticing that the diffused, directionless light reveals full structural complexity without the harsh contrast shadows of direct sun. Cloud Atlas is built from this observation: eight calibrated steps through the blue-gray sky range, from the visual weight of approaching weather to the weightless openness of high atmospheric ice.
Storm Gray and Pewter Sky form the palette's heaviest values — the low-key blues of a sky that will deliver rain within hours. Both tones retain enough blue to read as sky rather than neutral gray, but the saturation is suppressed enough that they function as strong neutrals in practical design application. Blue Cloud marks the step where the sky's blue identity becomes dominant over its gray weight — the signature color of an evenly overcast but nonthreatening sky.
Sponsors
Silver Cloud, Light Cloud, and Cirrus represent the three lightest cloud tones — the pale silver and ice-blue shades that appear where the cloud layer thins or where high-altitude ice crystal clouds catch indirect light from above. These are extremely versatile neutral values for design systems that need a cool-temperature equivalent of warm ivory and cream — backgrounds, card surfaces, and panel fills that read as white in context while maintaining a specific atmospheric temperature that warm whites cannot provide.
White Peak is the palette's terminal value — so close to pure white that it functions as the lightest surface color in any design system built on Cloud Atlas. The full eight-step range is particularly valuable for monochromatic editorial design, minimalist fashion presentation, architectural visualization, premium technology branding materials, and any design context where cool, precise atmospheric restraint is the primary quality statement. The palette's consistent blue-gray temperature makes every value compatible — any subset of these eight tones will read as a coherent unit.