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Recognised as Colour

#66B29C

  • #66B29C
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#66B29C is a cyan with RGB values 102, 178, 156 and HSL 163°, 33%, 55%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#66B29C#66B29C
HEX#66B29C
RGBrgb(102, 178, 156)
RGB (0–1)0.4, 0.698, 0.6118
RGB percentages40%, 69.8%, 61.2%
HSLhsl(162.6, 33%, 54.9%)
HSV / HSBhsv(162.6, 42.7%, 69.8%)
CMYK42.7%, 0%, 12.4%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,730,396
CSS custom property--colour: #66B29C;

Brightness & contrast

Relative luminance0.37066WCAG 2.x, 0 is black and 1 is white
Perceived brightness156.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.41:1
Contrast with white2.5:1WCAG normal text: Fail
Contrast with black8.41:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#994D63

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AEA99Bno red cones; affects about 1% of men; ΔE 28.5 from the original
Deuteranopia#A1A09Eno green cones; the most common form, about 1% of men; ΔE 29 from the original
Tritanopia#4CB3ABno blue cones; rare, and affects men and women equally; ΔE 9.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.5:1WCAG large text: Fail
Contrast with black, large text8.41:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.4Light seagreen · ΔE 13.5Dark seagreen · ΔE 15.7Cadetblue · ΔE 15.8Medium turquoise · ΔE 17.7Dark cyan · ΔE 20
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.38, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B2667C
Analogous#66B276, #66A2B2
Triadic#9C66B2, #B29C66
Split complementary#B266A2, #B27666
Tetradic#7666B2, #B2667C, #A2B266

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEF6F4
Lighter +30%#CCE5DE
Lighter +20%#AAD4C8
Lighter +10%#88C3B2
Darker −10%#4D9882
Darker −20%#3C7665
Darker −30%#2B5448
Darker −40%#19332B
More saturated +25%#49CFA8
Less saturated −25%#839590

Channel breakdown

R102
G178
B156
Red102 (40%)
Green178 (69.8%)
Blue156 (61.2%)
Hue162.63°
Saturation (HSL)33.04%
Lightness54.9%
Dominant channelGreen
Hex per channelR 66 · G B2 · B 9C

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Every value on this page was computed from “66b29c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.