black

#000000

#3F657B

#3F657B

Contrast Ratio

3.36:1

Delta E

44.64

Very Different

50:50 Mix

Color Values

Format #000000 #3F657B
HEX #000000 #3F657B
RGB 0, 0, 0 63, 101, 123
HSL 0.0, 0.0%, 0.0% 202.0, 32.3%, 36.5%
HSV 0.0, 0.0%, 0.0% 202.0, 48.8%, 48.2%
CMYK 0%, 0%, 0%, 100% 48.8%, 17.9%, 0.0%, 51.8%
OKLCH 0.0 0.0 0.0 0.4875 0.0558 235.0

Contrast & Accessibility

3.36:1
AA Fail AA Large Pass AAA Fail AAA Large Fail

Text Readability

The quick brown fox jumps over the lazy dog

Text: #3F657B → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #3F657B

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #3F657B);
background: linear-gradient(135deg, #000000, #3F657B);

Explore Each Color

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