Colour

#666F90

#666F90
Blue
Dark
Nearest: Slate grey

#666F90 is a blue with RGB values 102, 111, 144 and HSL 227°, 17%, 48%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#666F90#666F90

HEX#666F90

RGBrgb(102, 111, 144)

RGB (0–1)0.4, 0.4353, 0.5647

RGB percentages40%, 43.5%, 56.5%

HSLhsl(227.1, 17.1%, 48.2%)

HSV / HSBhsv(227.1, 29.2%, 56.5%)

CMYK29.2%, 22.9%, 0%, 43.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,713,232

CSS custom property--colour: #666F90;

Brightness & contrast

Relative luminance0.16207WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.95:1

Contrast with white4.95:1WCAG normal text: AA

Contrast with black4.24:1WCAG normal text: Fail

Greyscale equivalent#6F6F6F

Inverted#99906F

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#657291no red cones; affects about 1% of men; ΔE 2.1 from the original

Deuteranopia#626E8Fno green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#5B757Ano blue cones; rare, and affects men and women equally; ΔE 18.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.95:1WCAG large text: AAA

Contrast with black, large text4.24:1WCAG large text: AA

Named colours

Slate grey · ΔE 12.2 Light slate grey · ΔE 13.7 Steel blue · ΔE 16.5 Dim grey · ΔE 19.9 Gray · ΔE 20.7 Dark slate grey · ΔE 27.6

Nearest named CSS colourSlate grey (#708090)ΔE 12.24, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#908766

Analogous#668490, #726690

Triadic#90666F, #6F9066

Split complementary#907266, #849066

Tetradic#906684, #908766, #669072

Tints, shades & saturation

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

Lighter +40%#DCDEE6

Lighter +30%#BEC2D1

Lighter +20%#A0A6BC

Lighter +10%#828AA7

Darker −10%#515872

Darker −20%#3C4154

Darker −30%#272A36

Darker −40%#111319

More saturated +25%#475DAF

Less saturated −25%#7B7B7B

Channel breakdown

R102

G111

B144

Red102 (40%)

Green111 (43.5%)

Blue144 (56.5%)

Hue227.14°

Saturation (HSL)17.07%

Lightness48.24%

Dominant channelBlue

Hex per channelR 66 · G 6F · B 90

Keep nerding

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

#666F90

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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