#00ACBB · #12A4E4
Four independent scores (read the one that fits your goal): Readability 0/100 (fail) · Harmony 76/100 (monochrome) · Distinguishable 28/100 (hard to tell apart) · Match 33/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Light Sea Green and Vivid Cyan are very different (ΔE 30). They have closely related hues (13° apart) and their lightness is similar, so they read as two same-weight colours.
Light Sea Green text on Vivid Cyan: 1.02:1 (Fail); Vivid Cyan text on Light Sea Green: 1.02:1 (Fail). Neither meets AA at body size — nudging one color to #00393E clears it.
Monochrome — monochrome — a recognised, balanced pairing (harmony 76/100). 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 #00393E clears AA.
Their CIE76 ΔE is about 30 — very different.
clearly different colours (ΔE 30).
Explore each color: Light Sea Green #00ACBB · Vivid Cyan #12A4E4 · Shades: Light Sea Green shades · Vivid Cyan shades · Contrast checker →