black

#000000

#FF4455

#FF4455

Contrast Ratio

6.21:1

Delta E

97.21

Very Different

50:50 Mix

Color Values

Format #000000 #FF4455
HEX #000000 #FF4455
RGB 0, 0, 0 255, 68, 85
HSL 0.0, 0.0%, 0.0% 354.5, 100.0%, 63.3%
HSV 0.0, 0.0%, 0.0% 354.5, 73.3%, 100.0%
CMYK 0%, 0%, 0%, 100% 0.0%, 73.3%, 66.7%, 0.0%
OKLCH 0.0 0.0 0.0 0.666 0.2216 21.0

Contrast & Accessibility

6.21:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #FF4455 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #FF4455

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #FF4455);
background: linear-gradient(135deg, #000000, #FF4455);

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