black

#000000

#21F11F

#21F11F

Contrast Ratio

13.67:1

Delta E

138.85

Very Different

50:50 Mix

Color Values

Format #000000 #21F11F
HEX #000000 #21F11F
RGB 0, 0, 0 33, 241, 31
HSL 0.0, 0.0%, 0.0% 119.4, 88.2%, 53.3%
HSV 0.0, 0.0%, 0.0% 119.4, 87.1%, 94.5%
CMYK 0%, 0%, 0%, 100% 86.3%, 0.0%, 87.1%, 5.5%
OKLCH 0.0 0.0 0.0 0.8327 0.2748 142.6

Contrast & Accessibility

13.67:1
AA Pass AA Large Pass AAA Pass AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #21F11F → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #21F11F

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #21F11F);
background: linear-gradient(135deg, #000000, #21F11F);

Explore Each Color

Related Comparisons