black

#000000

#66CD3B

#66CD3B

Contrast Ratio

10.36:1

Delta E

110.22

Very Different

50:50 Mix

Color Values

Format #000000 #66CD3B
HEX #000000 #66CD3B
RGB 0, 0, 0 102, 205, 59
HSL 0.0, 0.0%, 0.0% 102.3, 59.3%, 51.8%
HSV 0.0, 0.0%, 0.0% 102.3, 71.2%, 80.4%
CMYK 0%, 0%, 0%, 100% 50.2%, 0.0%, 71.2%, 19.6%
OKLCH 0.0 0.0 0.0 0.758 0.2044 138.2

Contrast & Accessibility

10.36:1
AA Pass AA Large Pass AAA Pass AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #66CD3B → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #66CD3B

Color Difference (Delta E)

110.22 Very Different
0 — Identical 5 — Similar 25 — Noticeable 100 — Very Different

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #66CD3B);
background: linear-gradient(135deg, #000000, #66CD3B);

Explore Each Color

Related Comparisons