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Colour

#66FFBB

  • #66FFBB
  • Cyan
  • Light
  • Nearest: Aquamarine

#66FFBB is a cyan with RGB values 102, 255, 187 and HSL 153°, 100%, 70%. It is a light colour, so black text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Aquamarine.

Colour values

#66FFBB#66FFBB
HEX#66FFBB
HEX (short)#6FB
RGBrgb(102, 255, 187)
RGB (0–1)0.4, 1, 0.7333
RGB percentages40%, 100%, 73.3%
HSLhsl(153.3, 100%, 70%)
HSV / HSBhsv(153.3, 60%, 100%)
CMYK60%, 0%, 26.7%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,750,139
CSS custom property--colour: #66FFBB;

Brightness & contrast

Relative luminance0.77933WCAG 2.x, 0 is black and 1 is white
Perceived brightness212.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 16.59:1
Contrast with white1.27:1WCAG normal text: Fail
Contrast with black16.59:1WCAG normal text: AAA
Greyscale equivalent#DADADA
Inverted#990044

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FCEDB7no red cones; affects about 1% of men; ΔE 53.6 from the original
Deuteranopia#E7DEBFno green cones; the most common form, about 1% of men; ΔE 54.2 from the original
Tritanopia#04FEEDno blue cones; rare, and affects men and women equally; ΔE 26.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.27:1WCAG large text: Fail
Contrast with black, large text16.59:1WCAG large text: AAA

Named colours

Aquamarine · ΔE 15.1Medium spring green · ΔE 19.2Light green · ΔE 19.4Pale green · ΔE 19.5Medium aquamarine · ΔE 26.2Medium seagreen · ΔE 26.9
Nearest named CSS colourAquamarine (#7FFFD4)ΔE 15.14, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF66AA
Analogous#66FF6E, #66F7FF
Triadic#BB66FF, #FFBB66
Split complementary#FF66F7, #FF6E66
Tetradic#6E66FF, #FF66AA, #F7FF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCFFE8
Lighter +10%#99FFD2
Darker −10%#33FFA4
Darker −20%#00FF8E
Darker −30%#00CC71
Darker −40%#009955
More saturated +25%#66FFBB
Less saturated −25%#79ECB9

Channel breakdown

R102
G255
B187
Red102 (40%)
Green255 (100%)
Blue187 (73.3%)
Hue153.33°
Saturation (HSL)100%
Lightness70%
Dominant channelGreen
Hex per channelR 66 · G FF · B BB

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