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Recognised as Colour

#66C8BA

  • #66C8BA
  • Cyan
  • Dark
  • Nearest: Medium turquoise

#66C8BA is a cyan with RGB values 102, 200, 186 and HSL 171°, 47%, 59%. It is a dark colour, so black text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66C8BA#66C8BA
HEX#66C8BA
RGBrgb(102, 200, 186)
RGB (0–1)0.4, 0.7843, 0.7294
RGB percentages40%, 78.4%, 72.9%
HSLhsl(171.4, 47.1%, 59.2%)
HSV / HSBhsv(171.4, 49%, 78.4%)
CMYK49%, 0%, 7%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,736,058
CSS custom property--colour: #66C8BA;

Brightness & contrast

Relative luminance0.47679WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.54:1
Contrast with white1.99:1WCAG normal text: Fail
Contrast with black10.54:1WCAG normal text: AAA
Greyscale equivalent#B2B2B2
Inverted#993745

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C0BFBAno red cones; affects about 1% of men; ΔE 32.1 from the original
Deuteranopia#B0B3BBno green cones; the most common form, about 1% of men; ΔE 32.9 from the original
Tritanopia#34CBC4no blue cones; rare, and affects men and women equally; ΔE 9.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.99:1WCAG large text: Fail
Contrast with black, large text10.54:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 8.6Light seagreen · ΔE 11.2Medium aquamarine · ΔE 11.9Turquoise · ΔE 13.7Dark turquoise · ΔE 14Cadetblue · ΔE 19.2
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 8.56, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C86674
Analogous#66C889, #66A5C8
Triadic#BA66C8, #C8BA66
Split complementary#C866A5, #C88966
Tetradic#8966C8, #C86674, #A5C866

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FCFEFE
Lighter +30%#D7F0ED
Lighter +20%#B1E3DC
Lighter +10%#8CD5CB
Darker −10%#42B9A8
Darker −20%#359386
Darker −30%#276E64
Darker −40%#1A4841
More saturated +25%#4CE2CD
Less saturated −25%#80AEA7

Channel breakdown

R102
G200
B186
Red102 (40%)
Green200 (78.4%)
Blue186 (72.9%)
Hue171.43°
Saturation (HSL)47.12%
Lightness59.22%
Dominant channelGreen
Hex per channelR 66 · G C8 · B BA

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Every value on this page was computed from “66c8ba” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.