#91C952 · #CCB600
Four independent scores (read the one that fits your goal): Readability 1/100 (fail) · Harmony 100/100 (analogous) · Distinguishable 82/100 (easy to tell apart) · Match 16/100 (different). There is no single “good/bad” — a pair can clash for text yet be great for an outfit.
Yellow Green and Vivid Yellow are very different (ΔE 38). They have distinctly different hues (35° apart) and their lightness is similar, so they read as two same-weight colours.
Yellow Green text on Vivid Yellow: 1.04:1 (Fail); Vivid Yellow text on Yellow Green: 1.04:1 (Fail). Neither meets AA at body size — nudging one color to #315000 clears it.
Analogous — analogous — a recognised, balanced pairing (harmony 100/100). 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 #315000 clears AA.
Their CIE76 ΔE is about 38 — very different.
clearly different colours (ΔE 38).
Explore each color: Yellow Green #91C952 · Vivid Yellow #CCB600 · Shades: Yellow Green shades · Vivid Yellow shades · Contrast checker →