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Recognised as Colour

#66BDAB

  • #66BDAB
  • Cyan
  • Dark
  • Nearest: Light seagreen

#66BDAB is a cyan with RGB values 102, 189, 171 and HSL 168°, 40%, 57%. It is a dark colour, so black text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#66BDAB#66BDAB
HEX#66BDAB
RGBrgb(102, 189, 171)
RGB (0–1)0.4, 0.7412, 0.6706
RGB percentages40%, 74.1%, 67.1%
HSLhsl(167.6, 39.7%, 57.1%)
HSV / HSBhsv(167.6, 46%, 74.1%)
CMYK46%, 0%, 9.5%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,733,227
CSS custom property--colour: #66BDAB;

Brightness & contrast

Relative luminance0.4216WCAG 2.x, 0 is black and 1 is white
Perceived brightness165.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.43:1
Contrast with white2.23:1WCAG normal text: Fail
Contrast with black9.43:1WCAG normal text: AAA
Greyscale equivalent#A9A9A9
Inverted#994254

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B7B4AAno red cones; affects about 1% of men; ΔE 30.3 from the original
Deuteranopia#A8A9ACno green cones; the most common form, about 1% of men; ΔE 31 from the original
Tritanopia#42BFB7no blue cones; rare, and affects men and women equally; ΔE 8.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.23:1WCAG large text: Fail
Contrast with black, large text9.43:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 11.3Medium aquamarine · ΔE 11.6Medium turquoise · ΔE 12.9Cadetblue · ΔE 16.9Turquoise · ΔE 17.6Dark turquoise · ΔE 17.8
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 11.29, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD6678
Analogous#66BD80, #66A3BD
Triadic#AB66BD, #BDAB66
Split complementary#BD66A3, #BD8066
Tetradic#7F66BD, #BD6678, #A3BD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F5FAF9
Lighter +30%#D1EBE6
Lighter +20%#ADDCD2
Lighter +10%#8ACCBF
Darker −10%#48A894
Darker −20%#398475
Darker −30%#2A6055
Darker −40%#1A3D36
More saturated +25%#4BD8BB
Less saturated −25%#81A29B

Channel breakdown

R102
G189
B171
Red102 (40%)
Green189 (74.1%)
Blue171 (67.1%)
Hue167.59°
Saturation (HSL)39.73%
Lightness57.06%
Dominant channelGreen
Hex per channelR 66 · G BD · B AB

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