black

#000000

#636639

#636639

Contrast Ratio

3.49:1

Delta E

49.58

Very Different

50:50 Mix

Color Values

Format #000000 #636639
HEX #000000 #636639
RGB 0, 0, 0 99, 102, 57
HSL 0.0, 0.0%, 0.0% 64.0, 28.3%, 31.2%
HSV 0.0, 0.0%, 0.0% 64.0, 44.1%, 40.0%
CMYK 0%, 0%, 0%, 100% 2.9%, 0.0%, 44.1%, 60.0%
OKLCH 0.0 0.0 0.0 0.4963 0.0652 111.9

Contrast & Accessibility

3.49:1
AA Fail AA Large Pass AAA Fail AAA Large Fail

Text Readability

The quick brown fox jumps over the lazy dog

Text: #636639 → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #636639

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #636639);
background: linear-gradient(135deg, #000000, #636639);

Explore Each Color

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