black

#000000

#F31315

#F31315

Contrast Ratio

4.91:1

Delta E

109.02

Very Different

50:50 Mix

Color Values

Format #000000 #F31315
HEX #000000 #F31315
RGB 0, 0, 0 243, 19, 21
HSL 0.0, 0.0%, 0.0% 359.5, 90.3%, 51.4%
HSV 0.0, 0.0%, 0.0% 359.5, 92.2%, 95.3%
CMYK 0%, 0%, 0%, 100% 0.0%, 92.2%, 91.4%, 4.7%
OKLCH 0.0 0.0 0.0 0.6101 0.2437 28.5

Contrast & Accessibility

4.91:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #F31315 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #F31315

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #F31315);
background: linear-gradient(135deg, #000000, #F31315);

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