Colour
#42A5AC
- #42A5AC
- Cyan
- Dark
- Nearest: Cadetblue
#42A5AC is a cyan with RGB values 66, 165, 172 and HSL 184°, 45%, 47%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.
Colour values
#42A5AC#42A5AC
HEX#42A5AC
RGBrgb(66, 165, 172)
RGB (0–1)0.2588, 0.6471, 0.6745
RGB percentages25.9%, 64.7%, 67.5%
HSLhsl(184, 44.5%, 46.7%)
HSV / HSBhsv(184, 61.6%, 67.5%)
CMYK61.6%, 4.1%, 0%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,367,788
CSS custom property--colour: #42A5AC;
Brightness & contrast
Relative luminance0.31047WCAG 2.x, 0 is black and 1 is white
Perceived brightness143.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.21:1
Contrast with white2.91:1WCAG normal text: Fail
Contrast with black7.21:1WCAG normal text: AAA
Greyscale equivalent#909090
Inverted#BD5A53
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.91:1WCAG large text: Fail
Contrast with black, large text7.21:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#AC4942
Analogous#42AC7E, #4270AC
Triadic#AC42A5, #A5AC42
Split complementary#AC4270, #AC7E42
Tetradic#7E42AC, #AC4942, #70AC42
Tints, shades & saturation
Channel breakdown
R66
G165
B172
Red66 (25.9%)
Green165 (64.7%)
Blue172 (67.5%)
Hue183.96°
Saturation (HSL)44.54%
Lightness46.67%
Dominant channelBlue
Hex per channelR 42 · G A5 · B AC
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