black

#000000

#378BD0

#378BD0

Contrast Ratio

5.77:1

Delta E

70.41

Very Different

50:50 Mix

Color Values

Format #000000 #378BD0
HEX #000000 #378BD0
RGB 0, 0, 0 55, 139, 208
HSL 0.0, 0.0%, 0.0% 207.1, 61.9%, 51.6%
HSV 0.0, 0.0%, 0.0% 207.1, 73.6%, 81.6%
CMYK 0%, 0%, 0%, 100% 73.6%, 33.2%, 0.0%, 18.4%
OKLCH 0.0 0.0 0.0 0.6181 0.1318 247.0

Contrast & Accessibility

5.77:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #378BD0 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #378BD0

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #378BD0);
background: linear-gradient(135deg, #000000, #378BD0);

Explore Each Color

Related Comparisons