black

#000000

#21AB21

#21AB21

Contrast Ratio

6.91:1

Delta E

102.34

Very Different

50:50 Mix

Color Values

Format #000000 #21AB21
HEX #000000 #21AB21
RGB 0, 0, 0 33, 171, 33
HSL 0.0, 0.0%, 0.0% 120.0, 67.6%, 40.0%
HSV 0.0, 0.0%, 0.0% 120.0, 80.7%, 67.1%
CMYK 0%, 0%, 0%, 100% 80.7%, 0.0%, 80.7%, 32.9%
OKLCH 0.0 0.0 0.0 0.6465 0.205 142.7

Contrast & Accessibility

6.91:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #21AB21 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #21AB21

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #21AB21);
background: linear-gradient(135deg, #000000, #21AB21);

Explore Each Color

Related Comparisons