1. An imaging sensor for low light level color imaging, comprising: an array of pixels, each of the pixels comprising: a first pixel portion that has a first photosensitive area and is responsive to light in a panchromatic spectral range, wherein the panchromatic spectral range includes visible light and near infrared light; a second pixel portion that has a second photosensitive area and is responsive to light in a sub-band spectral range, the first photosensitive area being greater than the second photosensitive area and the sub-band spectral range being narrower than and contained within the panchromatic spectral range a readout node; at least one first transfer transistor in communication with the first pixel portion and the readout node; and at least one second transfer transistor in communication with the second pixel portion and the readout node, wherein the at least one first transfer transistor is configured to transfer charge from the first pixel portion to the readout node for a panchromatic image and wherein the at least one second transfer transistor is configured to transfer charge from the second pixel portion to the readout node for a sub-band image.