Colour

#647AFF

#647AFF
Blue
Dark
Nearest: Royal blue

#647AFF is a blue with RGB values 100, 122, 255 and HSL 231°, 100%, 70%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#647AFF#647AFF

HEX#647AFF

RGBrgb(100, 122, 255)

RGB (0–1)0.3922, 0.4784, 1

RGB percentages39.2%, 47.8%, 100%

HSLhsl(231.5, 100%, 69.6%)

HSV / HSBhsv(231.5, 60.8%, 100%)

CMYK60.8%, 52.2%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,585,087

CSS custom property--colour: #647AFF;

Brightness & contrast

Relative luminance0.23848WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.77:1

Contrast with white3.64:1WCAG normal text: Fail

Contrast with black5.77:1WCAG normal text: AA

Greyscale equivalent#7F7F7F

Inverted#9B8500

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#268DFFno red cones; affects about 1% of men; ΔE 19.8 from the original

Deuteranopia#007FFCno green cones; the most common form, about 1% of men; ΔE 13.3 from the original

Tritanopia#0099B1no blue cones; rare, and affects men and women equally; ΔE 73.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.64:1WCAG large text: AA

Contrast with black, large text5.77:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.2 Medium slateblue · ΔE 11 Slate blue · ΔE 16 Medium purple · ΔE 19.5 Dodgerblue · ΔE 22.3 Cornflower blue · ΔE 30

Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.21, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#FFE964

Analogous#64C7FF, #9C64FF

Triadic#FF647A, #7AFF64

Split complementary#FF9C64, #C7FF64

Tetradic#FF64C7, #FFE964, #64FF9C

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FDFDFF

Lighter +20%#CAD2FF

Lighter +10%#97A6FF

Darker −10%#314EFF

Darker −20%#0024FD

Darker −30%#001DCA

Darker −40%#001597

More saturated +25%#647AFF

Less saturated −25%#7788EC

Channel breakdown

R100

G122

B255

Red100 (39.2%)

Green122 (47.8%)

Blue255 (100%)

Hue231.48°

Saturation (HSL)100%

Lightness69.61%

Dominant channelBlue

Hex per channelR 64 · G 7A · B FF

Keep nerding

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#647AFF

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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