black

#000000

#F51E21

#F51E21

Contrast Ratio

5.09:1

Delta E

106.78

Very Different

50:50 Mix

Color Values

Format #000000 #F51E21
HEX #000000 #F51E21
RGB 0, 0, 0 245, 30, 33
HSL 0.0, 0.0%, 0.0% 359.2, 91.5%, 53.9%
HSV 0.0, 0.0%, 0.0% 359.2, 87.8%, 96.1%
CMYK 0%, 0%, 0%, 100% 0.0%, 87.8%, 86.5%, 3.9%
OKLCH 0.0 0.0 0.0 0.6183 0.2408 27.7

Contrast & Accessibility

5.09:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #F51E21 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #F51E21

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #F51E21);
background: linear-gradient(135deg, #000000, #F51E21);

Explore Each Color

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