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Colour

#66CACB

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

#66CACB is a cyan with RGB values 102, 202, 203 and HSL 181°, 49%, 60%. It is a dark colour, so black text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Medium turquoise.

Colour values

#66CACB#66CACB
HEX#66CACB
RGBrgb(102, 202, 203)
RGB (0–1)0.4, 0.7922, 0.7961
RGB percentages40%, 79.2%, 79.6%
HSLhsl(180.6, 49.3%, 59.8%)
HSV / HSBhsv(180.6, 49.8%, 79.6%)
CMYK49.8%, 0.5%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,736,587
CSS custom property--colour: #66CACB;

Brightness & contrast

Relative luminance0.49378WCAG 2.x, 0 is black and 1 is white
Perceived brightness178.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.88:1
Contrast with white1.93:1WCAG normal text: Fail
Contrast with black10.88:1WCAG normal text: AAA
Greyscale equivalent#B5B5B5
Inverted#993534

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BFC2CBno red cones; affects about 1% of men; ΔE 30 from the original
Deuteranopia#AEB5CCno green cones; the most common form, about 1% of men; ΔE 31.3 from the original
Tritanopia#20D0CAno blue cones; rare, and affects men and women equally; ΔE 12.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.93:1WCAG large text: Fail
Contrast with black, large text10.88:1WCAG large text: AAA

Named colours

Medium turquoise · ΔE 8.6Dark turquoise · ΔE 11.9Light seagreen · ΔE 13.5Turquoise · ΔE 17.1Cadetblue · ΔE 17.3Pale turquoise · ΔE 17.4
Nearest named CSS colourMedium turquoise (#48D1CC)ΔE 8.64, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB6766
Analogous#66CB9A, #6698CB
Triadic#CB66CA, #CACB66
Split complementary#CB6698, #CB9966
Tetradic#9A66CB, #CB6766, #98CB66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFFF
Lighter +30%#D8F2F2
Lighter +20%#B2E4E5
Lighter +10%#8CD7D8
Darker −10%#40BCBE
Darker −20%#339798
Darker −30%#277171
Darker −40%#1A4B4B
More saturated +25%#4CE3E5
Less saturated −25%#80B1B1

Channel breakdown

R102
G202
B203
Red102 (40%)
Green202 (79.2%)
Blue203 (79.6%)
Hue180.59°
Saturation (HSL)49.27%
Lightness59.8%
Dominant channelBlue
Hex per channelR 66 · G CA · B CB

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