black

#000000

#537BCF

#537BCF

Contrast Ratio

5.1:1

Delta E

71.81

Very Different

50:50 Mix

Color Values

Format #000000 #537BCF
HEX #000000 #537BCF
RGB 0, 0, 0 83, 123, 207
HSL 0.0, 0.0%, 0.0% 220.6, 56.4%, 56.9%
HSV 0.0, 0.0%, 0.0% 220.6, 59.9%, 81.2%
CMYK 0%, 0%, 0%, 100% 59.9%, 40.6%, 0.0%, 18.8%
OKLCH 0.0 0.0 0.0 0.5936 0.1364 263.6

Contrast & Accessibility

5.1:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #537BCF → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #537BCF

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #537BCF);
background: linear-gradient(135deg, #000000, #537BCF);

Explore Each Color

Related Comparisons