Colour

#646F8E

#646F8E
Blue
Dark
Nearest: Slate grey

#646F8E is a blue with RGB values 100, 111, 142 and HSL 224°, 17%, 47%. 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

#646F8E#646F8E

HEX#646F8E

RGBrgb(100, 111, 142)

RGB (0–1)0.3922, 0.4353, 0.5569

RGB percentages39.2%, 43.5%, 55.7%

HSLhsl(224.3, 17.4%, 47.5%)

HSV / HSBhsv(224.3, 29.6%, 55.7%)

CMYK29.6%, 21.8%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,582,158

CSS custom property--colour: #646F8E;

Brightness & contrast

Relative luminance0.16031WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.99:1

Contrast with white4.99:1WCAG normal text: AA

Contrast with black4.21:1WCAG normal text: Fail

Greyscale equivalent#6F6F6F

Inverted#9B9071

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#65718Fno red cones; affects about 1% of men; ΔE 1 from the original

Deuteranopia#626E8Dno green cones; the most common form, about 1% of men; ΔE 0.6 from the original

Tritanopia#597579no blue cones; rare, and affects men and women equally; ΔE 17.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.99:1WCAG large text: AAA

Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Slate grey · ΔE 11.2 Light slate grey · ΔE 12.8 Steel blue · ΔE 16.7 Dim grey · ΔE 18.8 Gray · ΔE 19.7 Dark slate grey · ΔE 26.3

Nearest named CSS colourSlate grey (#708090)ΔE 11.17, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#8E8364

Analogous#64848E, #6E648E

Triadic#8E646F, #6F8E64

Split complementary#8E6E64, #848E64

Tetradic#8E6484, #8E8364, #648E6E

Tints, shades & saturation

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

Lighter +40%#D9DCE5

Lighter +30%#BCC1CF

Lighter +20%#9EA5BA

Lighter +10%#808AA5

Darker −10%#4F5870

Darker −20%#3A4052

Darker −30%#252934

Darker −40%#101116

More saturated +25%#4661AC

Less saturated −25%#797979

Channel breakdown

R100

G111

B142

Red100 (39.2%)

Green111 (43.5%)

Blue142 (55.7%)

Hue224.29°

Saturation (HSL)17.36%

Lightness47.45%

Dominant channelBlue

Hex per channelR 64 · G 6F · B 8E

Keep nerding

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

#646F8E

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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