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Recognised as Colour

#138A68

  • #138A68
  • Cyan
  • Dark
  • Nearest: Sea green

#138A68 is a cyan with RGB values 19, 138, 104 and HSL 163°, 76%, 31%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Sea green.

Colour values

#138A68#138A68
HEX#138A68
RGBrgb(19, 138, 104)
RGB (0–1)0.0745, 0.5412, 0.4078
RGB percentages7.5%, 54.1%, 40.8%
HSLhsl(162.9, 75.8%, 30.8%)
HSV / HSBhsv(162.9, 86.2%, 54.1%)
CMYK86.2%, 0%, 24.6%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,280,616
CSS custom property--colour: #138A68;

Brightness & contrast

Relative luminance0.19315WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.86:1
Contrast with white4.32:1WCAG normal text: Fail
Contrast with black4.86:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#EC7597

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#868066no red cones; affects about 1% of men; ΔE 37.4 from the original
Deuteranopia#79756Ano green cones; the most common form, about 1% of men; ΔE 38.8 from the original
Tritanopia#008B81no blue cones; rare, and affects men and women equally; ΔE 14.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.32:1WCAG large text: AA
Contrast with black, large text4.86:1WCAG large text: AAA

Named colours

Sea green · ΔE 10.4Dark cyan · ΔE 20.5Teal · ΔE 21.1Light seagreen · ΔE 21.8Medium seagreen · ΔE 22.3Medium aquamarine · ΔE 24.7
Nearest named CSS colourSea green (#2E8B57)ΔE 10.44, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A1335
Analogous#138A2D, #13708A
Triadic#68138A, #8A6813
Split complementary#8A1370, #8A2D13
Tetradic#2D138A, #8A1335, #708A13

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7CEDCD
Lighter +30%#4FE7BB
Lighter +20%#22E1AA
Lighter +10%#19B78A
Darker −10%#0D5D46
Darker −20%#073024
Darker −30%#000403
Darker −40%#000000
More saturated +25%#009D70
Less saturated −25%#277660

Channel breakdown

R19
G138
B104
Red19 (7.5%)
Green138 (54.1%)
Blue104 (40.8%)
Hue162.86°
Saturation (HSL)75.8%
Lightness30.78%
Dominant channelGreen
Hex per channelR 13 · G 8A · B 68

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Every value on this page was computed from “138a68” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.