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Recognised as Colour

#66CD9B

  • #66CD9B
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#66CD9B is a cyan with RGB values 102, 205, 155 and HSL 151°, 51%, 60%. It is a dark colour, so black text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66CD9B#66CD9B
HEX#66CD9B
RGBrgb(102, 205, 155)
RGB (0–1)0.4, 0.8039, 0.6078
RGB percentages40%, 80.4%, 60.8%
HSLhsl(150.9, 50.7%, 60.2%)
HSV / HSBhsv(150.9, 50.2%, 80.4%)
CMYK50.2%, 0%, 24.4%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,307
CSS custom property--colour: #66CD9B;

Brightness & contrast

Relative luminance0.48854WCAG 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 10.77:1
Contrast with white1.95:1WCAG normal text: Fail
Contrast with black10.77:1WCAG normal text: AAA
Greyscale equivalent#B3B3B3
Inverted#993264

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CBC098no red cones; affects about 1% of men; ΔE 39.6 from the original
Deuteranopia#BBB59Eno green cones; the most common form, about 1% of men; ΔE 39.9 from the original
Tritanopia#46CCBFno blue cones; rare, and affects men and women equally; ΔE 20.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.95:1WCAG large text: Fail
Contrast with black, large text10.77:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 8.2Medium seagreen · ΔE 14.7Dark seagreen · ΔE 18.2Aquamarine · ΔE 18.2Turquoise · ΔE 20.9Sea green · ΔE 24.3
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 8.23, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CD6698
Analogous#66CD67, #66CCCD
Triadic#9B66CD, #CD9B66
Split complementary#CD66CC, #CD6766
Tetradic#6766CD, #CD6698, #CCCD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9F3E6
Lighter +20%#B3E6CD
Lighter +10%#8CDAB4
Darker −10%#40C082
Darker −20%#329B68
Darker −30%#26744E
Darker −40%#194E34
More saturated +25%#4DE69C
Less saturated −25%#7FB49A

Channel breakdown

R102
G205
B155
Red102 (40%)
Green205 (80.4%)
Blue155 (60.8%)
Hue150.87°
Saturation (HSL)50.74%
Lightness60.2%
Dominant channelGreen
Hex per channelR 66 · G CD · B 9B

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Every value on this page was computed from “66cd9b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.