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Recognised as Colour

#66DBE6

  • #66DBE6
  • Cyan
  • Light
  • Nearest: Medium turquoise

#66DBE6 is a cyan with RGB values 102, 219, 230 and HSL 185°, 72%, 65%. It is a light colour, so black text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66DBE6#66DBE6
HEX#66DBE6
RGBrgb(102, 219, 230)
RGB (0–1)0.4, 0.8588, 0.902
RGB percentages40%, 85.9%, 90.2%
HSLhsl(185.2, 71.9%, 65.1%)
HSV / HSBhsv(185.2, 55.7%, 90.2%)
CMYK55.7%, 4.8%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,740,966
CSS custom property--colour: #66DBE6;

Brightness & contrast

Relative luminance0.59201WCAG 2.x, 0 is black and 1 is white
Perceived brightness193.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.84:1
Contrast with white1.64:1WCAG normal text: Fail
Contrast with black12.84:1WCAG normal text: AAA
Greyscale equivalent#C3C3C3
Inverted#992419

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CCD3E7no red cones; affects about 1% of men; ΔE 31.9 from the original
Deuteranopia#B8C4E7no green cones; the most common form, about 1% of men; ΔE 33.3 from the original
Tritanopia#00E3DEno blue cones; rare, and affects men and women equally; ΔE 16.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.64:1WCAG large text: Fail
Contrast with black, large text12.84:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 11.2Dark turquoise · ΔE 12Pale turquoise · ΔE 16.2Sky blue · ΔE 16.3Powder blue · ΔE 18.1Turquoise · ΔE 18.2
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 11.25, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E67166
Analogous#66E6B1, #669BE6
Triadic#E666DB, #DBE666
Split complementary#E6669B, #E6B166
Tetradic#B166E6, #E67166, #9BE666

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EAFAFB
Lighter +20%#BEF0F4
Lighter +10%#92E5ED
Darker −10%#3AD1DF
Darker −20%#20B7C6
Darker −30%#198F9A
Darker −40%#12666E
More saturated +25%#50EDFC
Less saturated −25%#7CC9D0

Channel breakdown

R102
G219
B230
Red102 (40%)
Green219 (85.9%)
Blue230 (90.2%)
Hue185.16°
Saturation (HSL)71.91%
Lightness65.1%
Dominant channelBlue
Hex per channelR 66 · G DB · B E6

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Every value on this page was computed from “66dbe6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.