#C3B9D7 · #D0B5CC
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 69/100 (analogous (soft)) · Distinguishable 29/100 (hard to tell apart) · Match 84/100 (close). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Steel Blue and Thistle are very close (ΔE 7). They have distinctly different hues (49° apart) and their lightness is similar, so they read as two same-weight colours.
Light Steel Blue text on Thistle: 1.01:1 (Fail); Thistle text on Light Steel Blue: 1.01:1 (Fail). Neither meets AA at body size — nudging one color to #514962 clears it.
Analogous (soft) — workable but not a textbook harmony (harmony 69/100). 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 #514962 clears AA.
Their CIE76 ΔE is about 7 — very close.
close but visibly different (ΔE 7.2).
Explore each color: Light Steel Blue #C3B9D7 · Thistle #D0B5CC · Shades: Light Steel Blue shades · Thistle shades · Contrast checker →