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Recognised as Colour

#15D8AB

  • #15D8AB
  • Cyan
  • Light
  • Nearest: Medium aquamarine

#15D8AB is a cyan with RGB values 21, 216, 171 and HSL 166°, 82%, 46%. It is a light colour, so black text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#15D8AB#15D8AB
HEX#15D8AB
RGBrgb(21, 216, 171)
RGB (0–1)0.0824, 0.8471, 0.6706
RGB percentages8.2%, 84.7%, 67.1%
HSLhsl(166.2, 82.3%, 46.5%)
HSV / HSBhsv(166.2, 90.3%, 84.7%)
CMYK90.3%, 0%, 20.8%, 15.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,431,723
CSS custom property--colour: #15D8AB;

Brightness & contrast

Relative luminance0.52211WCAG 2.x, 0 is black and 1 is white
Perceived brightness175.6 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.44:1
Contrast with white1.84:1WCAG normal text: Fail
Contrast with black11.44:1WCAG normal text: AAA
Greyscale equivalent#ABABAB
Inverted#EA2754

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D1C9A9no red cones; affects about 1% of men; ΔE 52.1 from the original
Deuteranopia#BCB9AEno green cones; the most common form, about 1% of men; ΔE 53.3 from the original
Tritanopia#00DACBno blue cones; rare, and affects men and women equally; ΔE 16.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.84:1WCAG large text: Fail
Contrast with black, large text11.44:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 15.9Aquamarine · ΔE 16.9Turquoise · ΔE 17.6Medium seagreen · ΔE 19.6Medium turquoise · ΔE 24.8Light seagreen · ΔE 26
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 15.85, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D81542
Analogous#15D84A, #15A3D8
Triadic#AB15D8, #D8AB15
Split complementary#D815A3, #D84A15
Tetradic#4A15D8, #D81542, #A3D815

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C0F9EC
Lighter +30%#92F4DE
Lighter +20%#63F0CF
Lighter +10%#35EBC1
Darker −10%#10AA86
Darker −20%#0C7B61
Darker −30%#074D3D
Darker −40%#031E18
More saturated +25%#00EDB6
Less saturated −25%#33BA9B

Channel breakdown

R21
G216
B171
Red21 (8.2%)
Green216 (84.7%)
Blue171 (67.1%)
Hue166.15°
Saturation (HSL)82.28%
Lightness46.47%
Dominant channelGreen
Hex per channelR 15 · G D8 · B AB

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Every value on this page was computed from “15d8ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.