Create an ultra-realistic 4K background image with a Viking symbol inspired by Ragnar Lothbrok's 'Vikings' series. No need to create a complete scene, but rather an illustration of the Viking symbol in high quality and richness of detail. The symbol must be authentic, representando os valores dos guerreiros vikings, como coragem, Strength and dexterity. As cores utilizadas devem ser vivas e atraentes, with a touch of historical aspect, bringing out the epic atmosphere of the series. It is essential that the image is highly detailed and realistic, com texturas bem definidas e efeitos visuais impressionantes, ensuring quality in 4K resolution (3840x2160). The result should be an illustration of the Viking symbol that is aesthetically pleasing and perfectly suitable for use as a background, providing an immersive and impactful visual experience.

verybadimagenegative_v1.3, ng_deepnegative_v1_75t, (ugly face:0.8),cross-eyed,sketches, (worst quality:2), (low quality:2), (normal quality:2), lowres, normal quality, ((monochrome)), ((grayscale)), skin spots, acnes, skin blemishes, bad anatomy, DeepNegative, facing away, tilted head, {Multiple people}, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, worstquality, low quality, normal quality, jpegartifacts, signature, watermark, username, blurry, bad feet, cropped, poorly drawn hands, poorly drawn face, mutation, deformed, worst quality, low quality, normal quality, jpeg artifacts, signature, watermark, extra fingers, fewer digits, extra limbs, extra arms,extra legs, malformed limbs, fused fingers, too many fingers, long neck, cross-eyed,mutated hands, polar lowres, bad body, bad proportions, gross proportions, text, error, missing fingers, missing arms, missing legs, extra digit, extra arms, extra leg, extra foot, ((repeating hair))