#ACDAEB · #EBC4DB
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 94/100 (triadic) · Distinguishable 66/100 (somewhat similar) · Match 35/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Blue and Thistle are a clear pair (ΔE 30). They have distinctly different hues (128° apart) and their lightness is similar, so they read as two same-weight colours.
Light Blue text on Thistle: 1.04:1 (Fail); Thistle text on Light Blue: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #345E6D clears it.
Triadic — triadic — a recognised, balanced pairing (harmony 94/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.0:1, below the 4.5:1 minimum. Nudging one colour to #345E6D clears AA.
Their CIE76 ΔE is about 30 — a clear pair.
clearly different colours (ΔE 30).
Explore each color: Light Blue #ACDAEB · Thistle #EBC4DB · Shades: Light Blue shades · Thistle shades · Contrast checker →