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Recognised as Colour

#66EBFF

  • #66EBFF
  • Cyan
  • Light
  • Nearest: Dark turquoise

#66EBFF is a cyan with RGB values 102, 235, 255 and HSL 188°, 100%, 70%. It is a light colour, so black text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#66EBFF#66EBFF
HEX#66EBFF
RGBrgb(102, 235, 255)
RGB (0–1)0.4, 0.9216, 1
RGB percentages40%, 92.2%, 100%
HSLhsl(187.8, 100%, 70%)
HSV / HSBhsv(187.8, 60%, 100%)
CMYK60%, 7.8%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,745,087
CSS custom property--colour: #66EBFF;

Brightness & contrast

Relative luminance0.69461WCAG 2.x, 0 is black and 1 is white
Perceived brightness207.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 14.89:1
Contrast with white1.41:1WCAG normal text: Fail
Contrast with black14.89:1WCAG normal text: AAA
Greyscale equivalent#D0D0D0
Inverted#991400

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#D8E3FFno red cones; affects about 1% of men; ΔE 33.2 from the original
Deuteranopia#C1D2FFno green cones; the most common form, about 1% of men; ΔE 34.7 from the original
Tritanopia#00F5F1no blue cones; rare, and affects men and women equally; ΔE 19.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.41:1WCAG large text: Fail
Contrast with black, large text14.89:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 16.4Medium turquoise · ΔE 17.1Sky blue · ΔE 17.5Pale turquoise · ΔE 18.3Aqua · ΔE 19.1Cyan · ΔE 19.1
Nearest named CSS colourDark turquoise (#00CED1)ΔE 16.4, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF7A66
Analogous#66FFC7, #669EFF
Triadic#FF66EB, #EBFF66
Split complementary#FF669E, #FFC766
Tetradic#C766FF, #FF7A66, #9EFF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#CCF8FF
Lighter +10%#99F2FF
Darker −10%#33E4FF
Darker −20%#00DEFF
Darker −30%#00B1CC
Darker −40%#008599
More saturated +25%#66EBFF
Less saturated −25%#79DDEC

Channel breakdown

R102
G235
B255
Red102 (40%)
Green235 (92.2%)
Blue255 (100%)
Hue187.84°
Saturation (HSL)100%
Lightness70%
Dominant channelBlue
Hex per channelR 66 · G EB · B FF

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