black

#000000

#21B52F

#21B52F

Contrast Ratio

7.72:1

Delta E

104.9

Very Different

50:50 Mix

Color Values

Format #000000 #21B52F
HEX #000000 #21B52F
RGB 0, 0, 0 33, 181, 47
HSL 0.0, 0.0%, 0.0% 125.7, 69.2%, 42.0%
HSV 0.0, 0.0%, 0.0% 125.7, 81.8%, 71.0%
CMYK 0%, 0%, 0%, 100% 81.8%, 0.0%, 74.0%, 29.0%
OKLCH 0.0 0.0 0.0 0.6747 0.2085 143.8

Contrast & Accessibility

7.72:1
AA Pass AA Large Pass AAA Pass AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #21B52F → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #21B52F

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #21B52F);
background: linear-gradient(135deg, #000000, #21B52F);

Explore Each Color

Related Comparisons