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Recognised as Colour

#66ABDE

  • #66ABDE
  • Blue
  • Dark
  • Nearest: Light skyblue

#66ABDE is a blue with RGB values 102, 171, 222 and HSL 206°, 65%, 64%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#66ABDE#66ABDE
HEX#66ABDE
RGBrgb(102, 171, 222)
RGB (0–1)0.4, 0.6706, 0.8706
RGB percentages40%, 67.1%, 87.1%
HSLhsl(205.5, 64.5%, 63.5%)
HSV / HSBhsv(205.5, 54.1%, 87.1%)
CMYK54.1%, 23%, 0%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,728,670
CSS custom property--colour: #66ABDE;

Brightness & contrast

Relative luminance0.37225WCAG 2.x, 0 is black and 1 is white
Perceived brightness160.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.44:1
Contrast with white2.49:1WCAG normal text: Fail
Contrast with black8.44:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#995421

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#95ABE0no red cones; affects about 1% of men; ΔE 13 from the original
Deuteranopia#859FDDno green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#0FB8BCno blue cones; rare, and affects men and women equally; ΔE 34.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.49:1WCAG large text: Fail
Contrast with black, large text8.44:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 13.3Deep skyblue · ΔE 15.3Steel blue · ΔE 15.4Sky blue · ΔE 17.8Light steelblue · ΔE 21.3Cornflower blue · ΔE 24.5
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 13.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DE9966
Analogous#66DED5, #666FDE
Triadic#DE66AB, #ABDE66
Split complementary#DE666F, #DED566
Tetradic#D566DE, #DE9966, #6FDE66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E4F0F9
Lighter +20%#BAD9F0
Lighter +10%#90C2E7
Darker −10%#3C94D5
Darker −20%#277AB7
Darker −30%#1E5E8D
Darker −40%#154263
More saturated +25%#4FAEF5
Less saturated −25%#7DA8C7

Channel breakdown

R102
G171
B222
Red102 (40%)
Green171 (67.1%)
Blue222 (87.1%)
Hue205.5°
Saturation (HSL)64.52%
Lightness63.53%
Dominant channelBlue
Hex per channelR 66 · G AB · B DE

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