OHLC Range Area

import matplotlib.pyplot as plt
import numpy as np

# Data - Stock price range
np.random.seed(42)
days = np.arange(30)
opens = [100]
for _ in range(29):
    opens.append(opens[-1] * (1 + np.random.normal(0.001, 0.02)))
opens = np.array(opens)

highs = opens * (1 + np.abs(np.random.normal(0.01, 0.015, 30)))
lows = opens * (1 - np.abs(np.random.normal(0.01, 0.015, 30)))
closes = opens + np.random.normal(0, 2, 30)
closes = np.clip(closes, lows, highs)

# Figure - LIGHT THEME
fig, ax = plt.subplots(figsize=(10, 6), facecolor='#ffffff')
ax.set_facecolor('#ffffff')

# High-Low range
ax.fill_between(days, lows, highs, alpha=0.3, color='#27D3F5', label='Daily range')
ax.plot(days, closes, color='#F5276C', linewidth=2, label='Close')

# Moving average
ma = np.convolve(closes, np.ones(5)/5, mode='valid')
ax.plot(days[4:], ma, color='#4927F5', linewidth=2, linestyle='--', label='5-day MA')

# Styling
ax.set_xlabel('Day', color='#1f2937', fontsize=11)
ax.set_ylabel('Price ($)', color='#1f2937', fontsize=11)
ax.set_title('Stock Price Range', color='#1f2937', fontsize=14, fontweight='bold', pad=15)
ax.tick_params(colors='#374151', labelsize=9)
for spine in ax.spines.values():
    spine.set_color('#e5e7eb')
ax.spines['top'].set_visible(False)
ax.spines['right'].set_visible(False)
ax.yaxis.grid(True, color='#f3f4f6', linewidth=0.5)
ax.legend(facecolor='#ffffff', edgecolor='#e5e7eb', labelcolor='#1f2937')

plt.tight_layout()
plt.show()