black

#000000

#FF403E

#FF403E

Contrast Ratio

6.05:1

Delta E

101.79

Very Different

50:50 Mix

Color Values

Format #000000 #FF403E
HEX #000000 #FF403E
RGB 0, 0, 0 255, 64, 62
HSL 0.0, 0.0%, 0.0% 0.6, 100.0%, 62.2%
HSV 0.0, 0.0%, 0.0% 0.6, 75.7%, 100.0%
CMYK 0%, 0%, 0%, 100% 0.0%, 74.9%, 75.7%, 0.0%
OKLCH 0.0 0.0 0.0 0.6595 0.2269 26.5

Contrast & Accessibility

6.05:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #FF403E → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #FF403E

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #FF403E);
background: linear-gradient(135deg, #000000, #FF403E);

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