black

#000000

#178F7D

#178F7D

Contrast Ratio

5.26:1

Delta E

63.95

Very Different

50:50 Mix

Color Values

Format #000000 #178F7D
HEX #000000 #178F7D
RGB 0, 0, 0 23, 143, 125
HSL 0.0, 0.0%, 0.0% 171.0, 72.3%, 32.5%
HSV 0.0, 0.0%, 0.0% 171.0, 83.9%, 56.1%
CMYK 0%, 0%, 0%, 100% 83.9%, 0.0%, 12.6%, 43.9%
OKLCH 0.0 0.0 0.0 0.5845 0.1018 179.2

Contrast & Accessibility

5.26:1
AA Pass AA Large Pass AAA Fail AAA Large Pass

Text Readability

The quick brown fox jumps over the lazy dog

Text: #178F7D → Background: #000000

The quick brown fox jumps over the lazy dog

Text: #000000 → Background: #178F7D

Color Difference (Delta E)

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

Gradient

Color Mixing

CSS Gradient Code

background: linear-gradient(to right, #000000, #178F7D);
background: linear-gradient(135deg, #000000, #178F7D);

Explore Each Color

Related Comparisons