black

#000000

#3F57AB

#3F57AB

Contrast Ratio

3.16:1

Delta E

64.52

Very Different

50:50 Mix

Color Values

Format #000000 #3F57AB
HEX #000000 #3F57AB
RGB 0, 0, 0 63, 87, 171
HSL 0.0, 0.0%, 0.0% 226.7, 46.2%, 45.9%
HSV 0.0, 0.0%, 0.0% 226.7, 63.2%, 67.1%
CMYK 0%, 0%, 0%, 100% 63.2%, 49.1%, 0.0%, 32.9%
OKLCH 0.0 0.0 0.0 0.483 0.137 268.8

Contrast & Accessibility

3.16:1
AA Fail AA Large Pass AAA Fail AAA Large Fail

Text Readability

The quick brown fox jumps over the lazy dog

Text: #3F57AB → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #3F57AB

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #3F57AB);
background: linear-gradient(135deg, #000000, #3F57AB);

Explore Each Color

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