Recognised as Colour
#378D9A
- #378D9A
- Cyan
- Dark
- Nearest: Cadetblue
#378D9A is a cyan with RGB values 55, 141, 154 and HSL 188°, 47%, 41%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#378D9A#378D9A
HEX#378D9A
RGBrgb(55, 141, 154)
RGB (0–1)0.2157, 0.5529, 0.6039
RGB percentages21.6%, 55.3%, 60.4%
HSLhsl(187.9, 47.4%, 41%)
HSV / HSBhsv(187.9, 64.3%, 60.4%)
CMYK64.3%, 8.4%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,640,730
CSS custom property--colour: #378D9A;
Brightness & contrast
Relative luminance0.22195WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.44:1
Contrast with white3.86:1WCAG normal text: Fail
Contrast with black5.44:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#C87265
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.86:1WCAG large text: AA
Contrast with black, large text5.44:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#9A4437
Analogous#379A75, #375C9A
Triadic#9A378D, #8D9A37
Split complementary#9A375B, #9A7637
Tetradic#76379A, #9A4437, #5C9A37
Tints, shades & saturation
Channel breakdown
R55
G141
B154
Red55 (21.6%)
Green141 (55.3%)
Blue154 (60.4%)
Hue187.88°
Saturation (HSL)47.37%
Lightness40.98%
Dominant channelBlue
Hex per channelR 37 · G 8D · B 9A
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