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Recognised as Colour

#66D7AA

  • #66D7AA
  • Cyan
  • Light
  • Nearest: Medium aquamarine

#66D7AA is a cyan with RGB values 102, 215, 170 and HSL 156°, 59%, 62%. It is a light colour, so black text on it reaches 11.9:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66D7AA#66D7AA
HEX#66D7AA
RGBrgb(102, 215, 170)
RGB (0–1)0.4, 0.8431, 0.6667
RGB percentages40%, 84.3%, 66.7%
HSLhsl(156.1, 58.5%, 62.2%)
HSV / HSBhsv(156.1, 52.6%, 84.3%)
CMYK52.6%, 0%, 20.9%, 15.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,739,882
CSS custom property--colour: #66D7AA;

Brightness & contrast

Relative luminance0.54328WCAG 2.x, 0 is black and 1 is white
Perceived brightness183.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.87:1
Contrast with white1.77:1WCAG normal text: Fail
Contrast with black11.87:1WCAG normal text: AAA
Greyscale equivalent#BCBCBC
Inverted#992855

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D3CAA8no red cones; affects about 1% of men; ΔE 40.9 from the original
Deuteranopia#C2BEADno green cones; the most common form, about 1% of men; ΔE 41.4 from the original
Tritanopia#3AD7CAno blue cones; rare, and affects men and women equally; ΔE 17.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.77:1WCAG large text: Fail
Contrast with black, large text11.87:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 6.8Aquamarine · ΔE 13.9Turquoise · ΔE 16.8Medium seagreen · ΔE 18.6Dark seagreen · ΔE 20.8Medium turquoise · ΔE 21.6
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 6.8, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D76693
Analogous#66D772, #66CBD7
Triadic#AA66D7, #D7AA66
Split complementary#D766CC, #D77266
Tetradic#7266D7, #D76693, #CBD766

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DFF7ED
Lighter +20%#B7ECD7
Lighter +10%#8EE2C0
Darker −10%#3ECC94
Darker −20%#2DAA78
Darker −30%#22825C
Darker −40%#175A3F
More saturated +25%#4EEFAF
Less saturated −25%#7EBFA5

Channel breakdown

R102
G215
B170
Red102 (40%)
Green215 (84.3%)
Blue170 (66.7%)
Hue156.11°
Saturation (HSL)58.55%
Lightness62.16%
Dominant channelGreen
Hex per channelR 66 · G D7 · B AA

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Every value on this page was computed from “66d7aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.