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Colour

#66CF9B

  • #66CF9B
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#66CF9B is a cyan with RGB values 102, 207, 155 and HSL 150°, 52%, 61%. It is a dark colour, so black text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66CF9B#66CF9B
HEX#66CF9B
RGBrgb(102, 207, 155)
RGB (0–1)0.4, 0.8118, 0.6078
RGB percentages40%, 81.2%, 60.8%
HSLhsl(150.3, 52.2%, 60.6%)
HSV / HSBhsv(150.3, 50.7%, 81.2%)
CMYK50.7%, 0%, 25.1%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,737,819
CSS custom property--colour: #66CF9B;

Brightness & contrast

Relative luminance0.49817WCAG 2.x, 0 is black and 1 is white
Perceived brightness176.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.96:1
Contrast with white1.92:1WCAG normal text: Fail
Contrast with black10.96:1WCAG normal text: AAA
Greyscale equivalent#B5B5B5
Inverted#993064

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CDC298no red cones; affects about 1% of men; ΔE 40.2 from the original
Deuteranopia#BDB79Eno green cones; the most common form, about 1% of men; ΔE 40.5 from the original
Tritanopia#45CEC1no blue cones; rare, and affects men and women equally; ΔE 21.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.92:1WCAG large text: Fail
Contrast with black, large text10.96:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 9.3Medium seagreen · ΔE 14.3Aquamarine · ΔE 17.8Dark seagreen · ΔE 19.1Turquoise · ΔE 21.5Light green · ΔE 23.2
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 9.35, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF669A
Analogous#66CF67, #66CFCF
Triadic#9B66CF, #CF9B66
Split complementary#CF66CF, #CF6766
Tetradic#6666CF, #CF669A, #CFCF66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAF4E7
Lighter +20%#B4E7CE
Lighter +10%#8DDBB4
Darker −10%#3FC382
Darker −20%#319E68
Darker −30%#25774E
Darker −40%#195035
More saturated +25%#4DE89B
Less saturated −25%#7FB69B

Channel breakdown

R102
G207
B155
Red102 (40%)
Green207 (81.2%)
Blue155 (60.8%)
Hue150.29°
Saturation (HSL)52.24%
Lightness60.59%
Dominant channelGreen
Hex per channelR 66 · G CF · B 9B

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Every value on this page was computed from “66cf9b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.