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Recognised as Colour

#66AEAB

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

#66AEAB is a cyan with RGB values 102, 174, 171 and HSL 177°, 31%, 54%. It is a dark colour, so black text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#66AEAB#66AEAB
HEX#66AEAB
RGBrgb(102, 174, 171)
RGB (0–1)0.4, 0.6824, 0.6706
RGB percentages40%, 68.2%, 67.1%
HSLhsl(177.5, 30.8%, 54.1%)
HSV / HSBhsv(177.5, 41.4%, 68.2%)
CMYK41.4%, 0%, 1.7%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,729,387
CSS custom property--colour: #66AEAB;

Brightness & contrast

Relative luminance0.36037WCAG 2.x, 0 is black and 1 is white
Perceived brightness155.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.21:1
Contrast with white2.56:1WCAG normal text: Fail
Contrast with black8.21:1WCAG normal text: AAA
Greyscale equivalent#9E9E9E
Inverted#995154

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A6A7ABno red cones; affects about 1% of men; ΔE 24 from the original
Deuteranopia#999EACno green cones; the most common form, about 1% of men; ΔE 24.5 from the original
Tritanopia#46B2ADno blue cones; rare, and affects men and women equally; ΔE 8.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.56:1WCAG large text: Fail
Contrast with black, large text8.21:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 6.7Light seagreen · ΔE 14.3Dark cyan · ΔE 16.5Medium turquoise · ΔE 17.7Teal · ΔE 19.4Dark turquoise · ΔE 20.5
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 6.74, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AE6669
Analogous#66AE87, #668DAE
Triadic#AB66AE, #AEAB66
Split complementary#AE668D, #AE8766
Tetradic#8766AE, #AE6669, #8DAE66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF5F4
Lighter +30%#CAE3E2
Lighter +20%#A9D1D0
Lighter +10%#87C0BD
Darker −10%#4E9390
Darker −20%#3C7270
Darker −30%#2B504F
Darker −40%#192F2E
More saturated +25%#49CBC6
Less saturated −25%#839190

Channel breakdown

R102
G174
B171
Red102 (40%)
Green174 (68.2%)
Blue171 (67.1%)
Hue177.5°
Saturation (HSL)30.77%
Lightness54.12%
Dominant channelGreen
Hex per channelR 66 · G AE · B AB

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