Recognised as Colour
#428F91
- #428F91
- Cyan
- Dark
- Nearest: Cadetblue
#428F91 is a cyan with RGB values 66, 143, 145 and HSL 182°, 37%, 41%. 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
#428F91#428F91
HEX#428F91
RGBrgb(66, 143, 145)
RGB (0–1)0.2588, 0.5608, 0.5686
RGB percentages25.9%, 56.1%, 56.9%
HSLhsl(181.5, 37.4%, 41.4%)
HSV / HSBhsv(181.5, 54.5%, 56.9%)
CMYK54.5%, 1.4%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,362,129
CSS custom property--colour: #428F91;
Brightness & contrast
Relative luminance0.22848WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.57:1
Contrast with white3.77:1WCAG normal text: Fail
Contrast with black5.57:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#BD706E
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.77:1WCAG large text: AA
Contrast with black, large text5.57:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#914442
Analogous#42916C, #426891
Triadic#91428F, #8F9142
Split complementary#914268, #916C42
Tetradic#6B4291, #914442, #679142
Tints, shades & saturation
Channel breakdown
R66
G143
B145
Red66 (25.9%)
Green143 (56.1%)
Blue145 (56.9%)
Hue181.52°
Saturation (HSL)37.44%
Lightness41.37%
Dominant channelBlue
Hex per channelR 42 · G 8F · B 91
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