black

#000000

#A3370B

#A3370B

Contrast Ratio

3.11:1

Delta E

74.36

Very Different

50:50 Mix

Color Values

Format #000000 #A3370B
HEX #000000 #A3370B
RGB 0, 0, 0 163, 55, 11
HSL 0.0, 0.0%, 0.0% 17.4, 87.4%, 34.1%
HSV 0.0, 0.0%, 0.0% 17.4, 93.3%, 63.9%
CMYK 0%, 0%, 0%, 100% 0.0%, 66.3%, 93.3%, 36.1%
OKLCH 0.0 0.0 0.0 0.4887 0.1509 38.7

Contrast & Accessibility

3.11:1
AA Fail AA Large Pass AAA Fail AAA Large Fail

Text Readability

The quick brown fox jumps over the lazy dog

Text: #A3370B → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #A3370B

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #A3370B);
background: linear-gradient(135deg, #000000, #A3370B);

Explore Each Color

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