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Recognised as Colour

#66BBAB

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

#66BBAB is a cyan with RGB values 102, 187, 171 and HSL 169°, 38%, 57%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#66BBAB#66BBAB
HEX#66BBAB
RGBrgb(102, 187, 171)
RGB (0–1)0.4, 0.7333, 0.6706
RGB percentages40%, 73.3%, 67.1%
HSLhsl(168.7, 38.5%, 56.7%)
HSV / HSBhsv(168.7, 45.5%, 73.3%)
CMYK45.5%, 0%, 8.6%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,732,715
CSS custom property--colour: #66BBAB;

Brightness & contrast

Relative luminance0.41306WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.26:1
Contrast with white2.27:1WCAG normal text: Fail
Contrast with black9.26:1WCAG normal text: AAA
Greyscale equivalent#A8A8A8
Inverted#994454

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B5B2AAno red cones; affects about 1% of men; ΔE 29.7 from the original
Deuteranopia#A6A8ACno green cones; the most common form, about 1% of men; ΔE 29.9 from the original
Tritanopia#43BEB6no blue cones; rare, and affects men and women equally; ΔE 8.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.27:1WCAG large text: Fail
Contrast with black, large text9.26:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 11.1Medium aquamarine · ΔE 13.1Medium turquoise · ΔE 13.1Cadetblue · ΔE 15.6Dark turquoise · ΔE 17.8Turquoise · ΔE 18.5
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 11.13, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB6676
Analogous#66BB81, #66A0BB
Triadic#AB66BB, #BBAB66
Split complementary#BB66A0, #BB8166
Tetradic#8166BB, #BB6676, #A1BB66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F3FAF9
Lighter +30%#D0EAE5
Lighter +20%#ADDAD2
Lighter +10%#89CBBE
Darker −10%#49A594
Darker −20%#3A8174
Darker −30%#2A5E54
Darker −40%#1A3B35
More saturated +25%#4AD7BC
Less saturated −25%#829F9A

Channel breakdown

R102
G187
B171
Red102 (40%)
Green187 (73.3%)
Blue171 (67.1%)
Hue168.71°
Saturation (HSL)38.46%
Lightness56.67%
Dominant channelGreen
Hex per channelR 66 · G BB · B AB

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