Colour
#428EA1
- #428EA1
- Cyan
- Dark
- Nearest: Cadetblue
#428EA1 is a cyan with RGB values 66, 142, 161 and HSL 192°, 42%, 45%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#428EA1#428EA1
HEX#428EA1
RGBrgb(66, 142, 161)
RGB (0–1)0.2588, 0.5569, 0.6314
RGB percentages25.9%, 55.7%, 63.1%
HSLhsl(192, 41.9%, 44.5%)
HSV / HSBhsv(192, 59%, 63.1%)
CMYK59%, 11.8%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,361,889
CSS custom property--colour: #428EA1;
Brightness & contrast
Relative luminance0.23077WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.62:1
Contrast with white3.74:1WCAG normal text: Fail
Contrast with black5.62:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#BD715E
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.74:1WCAG large text: AA
Contrast with black, large text5.62:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#A15542
Analogous#42A184, #425EA1
Triadic#A1428E, #8EA142
Split complementary#A1425E, #A18442
Tetradic#8442A1, #A15542, #5EA142
Tints, shades & saturation
Channel breakdown
R66
G142
B161
Red66 (25.9%)
Green142 (55.7%)
Blue161 (63.1%)
Hue192°
Saturation (HSL)41.85%
Lightness44.51%
Dominant channelBlue
Hex per channelR 42 · G 8E · B A1
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