black

#000000

#E51A21

#E51A21

Contrast Ratio

4.5:1

Delta E

100.52

Very Different

50:50 Mix

Color Values

Format #000000 #E51A21
HEX #000000 #E51A21
RGB 0, 0, 0 229, 26, 33
HSL 0.0, 0.0%, 0.0% 357.9, 79.6%, 50.0%
HSV 0.0, 0.0%, 0.0% 357.9, 88.6%, 89.8%
CMYK 0%, 0%, 0%, 100% 0.0%, 88.6%, 85.6%, 10.2%
OKLCH 0.0 0.0 0.0 0.5872 0.2291 27.2

Contrast & Accessibility

4.5:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #E51A21 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #E51A21

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #E51A21);
background: linear-gradient(135deg, #000000, #E51A21);

Explore Each Color

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