black

#000000

#288F6B

#288F6B

Contrast Ratio

5.23:1

Delta E

66.22

Very Different

50:50 Mix

Color Values

Format #000000 #288F6B
HEX #000000 #288F6B
RGB 0, 0, 0 40, 143, 107
HSL 0.0, 0.0%, 0.0% 159.0, 56.3%, 35.9%
HSV 0.0, 0.0%, 0.0% 159.0, 72.0%, 56.1%
CMYK 0%, 0%, 0%, 100% 72.0%, 0.0%, 25.2%, 43.9%
OKLCH 0.0 0.0 0.0 0.5825 0.1084 165.2

Contrast & Accessibility

5.23:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #288F6B → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #288F6B

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #288F6B);
background: linear-gradient(135deg, #000000, #288F6B);

Explore Each Color

Related Comparisons