Python Math: Convert RGB color to HSV color

Last update on August 11 2025 12:35:24 (UTC/GMT +8 hours)

77.RGB to HSV Converter

Write a Python program to convert RGB color to HSV color.

Note: RGB - RGB (Red, Green, Blue) describes what kind of light needs to be emitted to produce a given color. Light is added together to create form from darkness. RGB stores individual values for red, green and blue. RGB is not a color space, it is a color model. There are many different RGB color spaces derived from this color model, some of which appear below.

HSV - (hue, saturation, value), also known as HSB (hue, saturation, brightness), is often used by artists because it is often more natural to think about a color in terms of hue and saturation than in terms of additive or subtractive color components. HSV is a transformation of an RGB colorspace, and its components and colorimetry are relative to the RGB colorspace from which it was derived.

Sample Solution:

Python Code:

def rgb_to_hsv(r, g, b):    r, g, b = r/255.0, g/255.0, b/255.0    mx = max(r, g, b)    mn = min(r, g, b)    df = mx-mn    if mx == mn:        h = 0    elif mx == r:        h = (60 * ((g-b)/df) + 360) % 360    elif mx == g:        h = (60 * ((b-r)/df) + 120) % 360    elif mx == b:        h = (60 * ((r-g)/df) + 240) % 360    if mx == 0:        s = 0    else:        s = (df/mx)*100    v = mx*100    return h, s, vprint(rgb_to_hsv(255, 255, 255))print(rgb_to_hsv(0, 215, 0))

Sample Output:

(0, 0.0, 100.0)                                                                                               (120.0, 100.0, 84.31372549019608)

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to convert a given RGB tuple to its corresponding HSV values using the colorsys module and print the output.
• Write a Python function that takes three integer values representing an RGB color and returns the HSV equivalent as a tuple.
• Write a Python script to prompt the user for RGB values, convert them to HSV, and then display the results with labels.
• Write a Python program to compare multiple RGB-to-HSV conversions and print a summary table of the results.

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