In Western cultures, Slate Blue often signifies tranquility and stability, making it a popular choice for serene spaces. Conversely, in some Eastern traditions, blue can symbolize immortality and protection, showcasing its multifaceted significance across different cultures.
The term 'slate blue' emerged in the 19th century, reflecting the color of the slate rock used in roofing and flooring. Its use in art and design grew alongside the Romantic movement, with artists like J.M.W. Turner popularizing similar shades in their landscapes.
Ranked by CIE76 ΔE — the perceptual distance from Slate Blue. Lower ΔE means a closer match (below ~2 is barely distinguishable).
All 45 Blues →Nine steps of Slate Blue by lightness — from #372F6B (darkest) to #B2A9E5 (lightest). Click any to copy.
Sitting opposite Slate Blue at 68° on the color wheel, these give the highest-contrast pairings.
Curated 5-color combinations featuring Slate Blue.
A 50–900 tonal scale with Slate Blue anchored at 500 — ready to drop into a design system. Click any step to copy.
Works well as text on light backgrounds; fails on dark.
Thresholds: AA needs 4.5:1 (normal text) / 3:1 (large); AAA needs 7:1 / 4.5:1. Large = 18pt+ or 14pt+ bold.
Copy-ready values for CSS, screen and print, plus the extra conversions designers reach for.
color: slateblue; color-mix(in srgb, slateblue 70%, white) 248°, 56%, 80% 48, 56, 0, 20 6970061 #6666CC How Slate Blue appears to viewers with the three main types of color blindness (~1 in 12 men, 1 in 200 women). Simulated approximations.