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Recognised as Colour

#669AAD

  • #669AAD
  • Cyan
  • Dark
  • Nearest: Cadetblue

#669AAD is a cyan with RGB values 102, 154, 173 and HSL 196°, 30%, 54%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#669AAD#669AAD
HEX#669AAD
RGBrgb(102, 154, 173)
RGB (0–1)0.4, 0.6039, 0.6784
RGB percentages40%, 60.4%, 67.8%
HSLhsl(196.1, 30.2%, 53.9%)
HSV / HSBhsv(196.1, 41%, 67.8%)
CMYK41%, 11%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,724,269
CSS custom property--colour: #669AAD;

Brightness & contrast

Relative luminance0.28953WCAG 2.x, 0 is black and 1 is white
Perceived brightness143 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.79:1
Contrast with white3.09:1WCAG normal text: Fail
Contrast with black6.79:1WCAG normal text: AA
Greyscale equivalent#909090
Inverted#996552

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8F97AEno red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#848FADno green cones; the most common form, about 1% of men; ΔE 15.2 from the original
Tritanopia#49A0A0no blue cones; rare, and affects men and women equally; ΔE 15.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.09:1WCAG large text: AA
Contrast with black, large text6.79:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 10.9Light slate grey · ΔE 11.9Slate grey · ΔE 13.7Sky blue · ΔE 19.6Steel blue · ΔE 20.5Light steelblue · ΔE 20.8
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 10.89, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD7966
Analogous#66AD9C, #6677AD
Triadic#AD669A, #9AAD66
Split complementary#AD6677, #AD9D66
Tetradic#9C66AD, #AD7966, #77AD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF2F4
Lighter +30%#CADCE2
Lighter +20%#A8C6D1
Lighter +10%#87B0BF
Darker −10%#4E8092
Darker −20%#3C6371
Darker −30%#2B464F
Darker −40%#19282E
More saturated +25%#49A8CA
Less saturated −25%#838C90

Channel breakdown

R102
G154
B173
Red102 (40%)
Green154 (60.4%)
Blue173 (67.8%)
Hue196.06°
Saturation (HSL)30.21%
Lightness53.92%
Dominant channelBlue
Hex per channelR 66 · G 9A · B AD

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Every value on this page was computed from “669aad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.