#8CD9D0 · #D5BCF0
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 66/100 (triadic (soft)) · Distinguishable 43/100 (somewhat similar) · Match 0/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Teal and Thistle are very different (ΔE 48). They have distinctly different hues (96° apart) and their lightness is similar, so they read as two same-weight colours.
Teal text on Thistle: 1.05:1 (Fail); Thistle text on Teal: 1.05:1 (Fail). Neither meets AA at body size — nudging one color to #005D57 clears it.
Triadic (soft) — workable but not a textbook harmony (harmony 66/100). This is about how they look together (clothing, interiors, branding), independent of text contrast.
Not at body size — the best direction is only 1.1:1, below the 4.5:1 minimum. Nudging one colour to #005D57 clears AA.
Their CIE76 ΔE is about 48 — very different.
clearly different colours (ΔE 48).
Explore each color: Teal #8CD9D0 · Thistle #D5BCF0 · Shades: Teal shades · Thistle shades · Contrast checker →