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Recognised as Colour

#378C79

  • #378C79
  • Cyan
  • Dark
  • Nearest: Dark cyan

#378C79 is a cyan with RGB values 55, 140, 121 and HSL 167°, 44%, 38%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#378C79#378C79
HEX#378C79
RGBrgb(55, 140, 121)
RGB (0–1)0.2157, 0.549, 0.4745
RGB percentages21.6%, 54.9%, 47.5%
HSLhsl(166.6, 43.6%, 38.2%)
HSV / HSBhsv(166.6, 60.7%, 54.9%)
CMYK60.7%, 0%, 13.6%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,640,441
CSS custom property--colour: #378C79;

Brightness & contrast

Relative luminance0.20949WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.19:1
Contrast with white4.05:1WCAG normal text: Fail
Contrast with black5.19:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#C87386

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#878478no red cones; affects about 1% of men; ΔE 29.7 from the original
Deuteranopia#7A7A7Ano green cones; the most common form, about 1% of men; ΔE 30.5 from the original
Tritanopia#008E86no blue cones; rare, and affects men and women equally; ΔE 8.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.05:1WCAG large text: AA
Contrast with black, large text5.19:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 11.6Teal · ΔE 12.1Cadetblue · ΔE 16.8Light seagreen · ΔE 17.2Sea green · ΔE 19.9Medium aquamarine · ΔE 24.8
Nearest named CSS colourDark cyan (#008B8B)ΔE 11.57, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C374A
Analogous#378C4F, #37758C
Triadic#79378C, #8C7937
Split complementary#8C3774, #8C4F37
Tetradic#4F378C, #8C374A, #748C37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AFE0D5
Lighter +30%#8BD1C2
Lighter +20%#66C3AE
Lighter +10%#45B199
Darker −10%#296759
Darker −20%#1A433A
Darker −30%#0C1E1A
Darker −40%#000000
More saturated +25%#1FA486
Less saturated −25%#4F746C

Channel breakdown

R55
G140
B121
Red55 (21.6%)
Green140 (54.9%)
Blue121 (47.5%)
Hue166.59°
Saturation (HSL)43.59%
Lightness38.24%
Dominant channelGreen
Hex per channelR 37 · G 8C · B 79

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Every value on this page was computed from “378c79” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.