black

#000000

#EF1E10

#EF1E10

Contrast Ratio

4.86:1

Delta E

107.68

Very Different

50:50 Mix

Color Values

Format #000000 #EF1E10
HEX #000000 #EF1E10
RGB 0, 0, 0 239, 30, 16
HSL 0.0, 0.0%, 0.0% 3.8, 87.5%, 50.0%
HSV 0.0, 0.0%, 0.0% 3.8, 93.3%, 93.7%
CMYK 0%, 0%, 0%, 100% 0.0%, 87.4%, 93.3%, 6.3%
OKLCH 0.0 0.0 0.0 0.6064 0.237 29.7

Contrast & Accessibility

4.86:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #EF1E10 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #EF1E10

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #EF1E10);
background: linear-gradient(135deg, #000000, #EF1E10);

Explore Each Color

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