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Recognised as Colour

#66BEC5

  • #66BEC5
  • Cyan
  • Dark
  • Nearest: Cadetblue

#66BEC5 is a cyan with RGB values 102, 190, 197 and HSL 184°, 45%, 59%. It is a dark colour, so black text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#66BEC5#66BEC5
HEX#66BEC5
RGBrgb(102, 190, 197)
RGB (0–1)0.4, 0.7451, 0.7725
RGB percentages40%, 74.5%, 77.3%
HSLhsl(184.4, 45%, 58.6%)
HSV / HSBhsv(184.4, 48.2%, 77.3%)
CMYK48.2%, 3.6%, 0%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,733,509
CSS custom property--colour: #66BEC5;

Brightness & contrast

Relative luminance0.43683WCAG 2.x, 0 is black and 1 is white
Perceived brightness169.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.74:1
Contrast with white2.16:1WCAG normal text: Fail
Contrast with black9.74:1WCAG normal text: AAA
Greyscale equivalent#ACACAC
Inverted#99413A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B2B7C6no red cones; affects about 1% of men; ΔE 26.1 from the original
Deuteranopia#A3ACC5no green cones; the most common form, about 1% of men; ΔE 26.7 from the original
Tritanopia#2EC4C0no blue cones; rare, and affects men and women equally; ΔE 13.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.16:1WCAG large text: Fail
Contrast with black, large text9.74:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 12.7Medium turquoise · ΔE 14.1Light seagreen · ΔE 15.4Sky blue · ΔE 15.4Dark turquoise · ΔE 15.9Powder blue · ΔE 18
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 12.66, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C56D66
Analogous#66C59D, #668EC5
Triadic#C566BE, #BEC566
Split complementary#C5668F, #C59D66
Tetradic#9C66C5, #C56D66, #8EC566

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FAFDFD
Lighter +30%#D5EDEF
Lighter +20%#B0DDE1
Lighter +10%#8BCED3
Darker −10%#44ACB4
Darker −20%#36888F
Darker −30%#28656A
Darker −40%#1A4245
More saturated +25%#4CD4DF
Less saturated −25%#80A8AB

Channel breakdown

R102
G190
B197
Red102 (40%)
Green190 (74.5%)
Blue197 (77.3%)
Hue184.42°
Saturation (HSL)45.02%
Lightness58.63%
Dominant channelBlue
Hex per channelR 66 · G BE · B C5

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Every value on this page was computed from “66bec5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.