Colour

#66718C

#66718C
Blue
Dark
Nearest: Slate grey

#66718C is a blue with RGB values 102, 113, 140 and HSL 223°, 16%, 47%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#66718C#66718C

HEX#66718C

RGBrgb(102, 113, 140)

RGB (0–1)0.4, 0.4431, 0.549

RGB percentages40%, 44.3%, 54.9%

HSLhsl(222.6, 15.7%, 47.5%)

HSV / HSBhsv(222.6, 27.1%, 54.9%)

CMYK27.1%, 19.3%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,713,740

CSS custom property--colour: #66718C;

Brightness & contrast

Relative luminance0.16528WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.88:1

Contrast with white4.88:1WCAG normal text: AA

Contrast with black4.31:1WCAG normal text: Fail

Greyscale equivalent#717171

Inverted#998E73

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#69738Dno red cones; affects about 1% of men; ΔE 1.1 from the original

Deuteranopia#65708Bno green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#5C767Ano blue cones; rare, and affects men and women equally; ΔE 15.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.88:1WCAG large text: AAA

Contrast with black, large text4.31:1WCAG large text: AA

Named colours

Slate grey · ΔE 8.8 Light slate grey · ΔE 10.7 Dim grey · ΔE 16.6 Gray · ΔE 17.3 Steel blue · ΔE 18 Dark slate grey · ΔE 24.9

Nearest named CSS colourSlate grey (#708090)ΔE 8.82, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#8C8166

Analogous#66848C, #6E668C

Triadic#8C6671, #718C66

Split complementary#8C6E66, #848C66

Tetradic#8C6684, #8C8166, #668C6E

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#DADDE4

Lighter +30%#BCC2CF

Lighter +20%#9FA7B9

Lighter +10%#818BA4

Darker −10%#51596E

Darker −20%#3B4151

Darker −30%#262A33

Darker −40%#101216

More saturated +25%#4864AA

Less saturated −25%#797979

Channel breakdown

R102

G113

B140

Red102 (40%)

Green113 (44.3%)

Blue140 (54.9%)

Hue222.63°

Saturation (HSL)15.7%

Lightness47.45%

Dominant channelBlue

Hex per channelR 66 · G 71 · B 8C

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#66718C

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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