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Recognised as Colour

#66CED9

  • #66CED9
  • Cyan
  • Light
  • Nearest: Medium turquoise

#66CED9 is a cyan with RGB values 102, 206, 217 and HSL 186°, 60%, 63%. It is a light colour, so black text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66CED9#66CED9
HEX#66CED9
RGBrgb(102, 206, 217)
RGB (0–1)0.4, 0.8078, 0.851
RGB percentages40%, 80.8%, 85.1%
HSLhsl(185.7, 60.2%, 62.5%)
HSV / HSBhsv(185.7, 53%, 85.1%)
CMYK53%, 5.1%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,625
CSS custom property--colour: #66CED9;

Brightness & contrast

Relative luminance0.51977WCAG 2.x, 0 is black and 1 is white
Perceived brightness182.7 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.4:1
Contrast with white1.84:1WCAG normal text: Fail
Contrast with black11.4:1WCAG normal text: AAA
Greyscale equivalent#B9B9B9
Inverted#993126

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C0C7DAno red cones; affects about 1% of men; ΔE 28.9 from the original
Deuteranopia#AEB9D9no green cones; the most common form, about 1% of men; ΔE 30.2 from the original
Tritanopia#00D5D1no blue cones; rare, and affects men and women equally; ΔE 16.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.84:1WCAG large text: Fail
Contrast with black, large text11.4:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 12.1Dark turquoise · ΔE 13.2Sky blue · ΔE 14Pale turquoise · ΔE 17Powder blue · ΔE 17.1Light seagreen · ΔE 17.6
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 12.07, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D97166
Analogous#66D9AB, #6694D9
Triadic#D966CE, #CED966
Split complementary#D96695, #D9AB66
Tetradic#AB66D9, #D97166, #94D966

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E1F5F7
Lighter +20%#B8E8ED
Lighter +10%#8FDBE3
Darker −10%#3DC1CF
Darker −20%#2BA1AE
Darker −30%#217B85
Darker −40%#17555C
More saturated +25%#4EE1F1
Less saturated −25%#7EBBC1

Channel breakdown

R102
G206
B217
Red102 (40%)
Green206 (80.8%)
Blue217 (85.1%)
Hue185.74°
Saturation (HSL)60.21%
Lightness62.55%
Dominant channelBlue
Hex per channelR 66 · G CE · B D9

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Every value on this page was computed from “66ced9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.