diff --git a/src/util/rgb2closest_color.py b/src/util/rgb2closest_color.py
index 0006304..92b16f9 100644
--- a/src/util/rgb2closest_color.py
+++ b/src/util/rgb2closest_color.py
@@ -1,3 +1,4 @@
+from typing import Tuple
 from webcolors import hex_to_rgb
 
 # 16 основных цветов, hex соответвуют hex цветам livecarta
@@ -8,7 +9,7 @@ html4_hex_to_names = {'#00ffff': 'aqua', '#000000': 'black', '#0000ff': 'blue',
                       '#ffffff': 'white', '#ffff00': 'yellow'}
 
 
-def rgb2hsv(r: int, g: int, b: int):
+def rgb2hsv(r: int, g: int, b: int) -> Tuple[float, float, float]:
     r /= 255
     g /= 255
     b /= 255
@@ -42,7 +43,7 @@ for key, name in html4_hex_to_names.items():
     HTML_COLORS_HSV[name] = (h, s, v)
 
 
-def rgb2closest_html_color_name(color: str):
+def rgb2closest_html_color_name(color: str) -> str:
     """
     - get color in hsv (hue, saturation, value)
     - try to match with black, grey, silver (black, darkGray, lightGray) as this colors matches badly even in hsv model