Colour

#3131A5

#3131A5
Blue
Dark
Nearest: Rebecca purple

#3131A5 is a blue with RGB values 49, 49, 165 and HSL 240°, 54%, 42%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Rebecca purple.

Colour values

#3131A5#3131A5

HEX#3131A5

RGBrgb(49, 49, 165)

RGB (0–1)0.1922, 0.1922, 0.6471

RGB percentages19.2%, 19.2%, 64.7%

HSLhsl(240, 54.2%, 42%)

HSV / HSBhsv(240, 70.3%, 64.7%)

CMYK70.3%, 70.3%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,223,973

CSS custom property--colour: #3131A5;

Brightness & contrast

Relative luminance0.05566WCAG 2.x, 0 is black and 1 is white

Perceived brightness72.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.94:1

Contrast with white9.94:1WCAG normal text: AAA

Contrast with black2.11:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#CECE5A

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0048A9no red cones; affects about 1% of men; ΔE 18.6 from the original

Deuteranopia#003DA3no green cones; the most common form, about 1% of men; ΔE 12.6 from the original

Tritanopia#005167no blue cones; rare, and affects men and women equally; ΔE 67 from the original

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

Contrast with white, large text9.94:1WCAG large text: AAA

Contrast with black, large text2.11:1WCAG large text: Fail

Named colours

Rebecca purple · ΔE 16.4 Slate blue · ΔE 17.7 Indigo · ΔE 17.9 Navy · ΔE 18.1 Midnight blue · ΔE 18.9 Dark blue · ΔE 19.3

Nearest named CSS colourRebecca purple (#663399)ΔE 16.37, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A5A531

Analogous#316BA5, #6B31A5

Triadic#A53131, #31A531

Split complementary#A56B31, #6BA531

Tetradic#A5316B, #A5A531, #31A56B

Tints, shades & saturation

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

Lighter +40%#B8B8EA

Lighter +30%#9191DE

Lighter +20%#6969D3

Lighter +10%#4242C7

Darker −10%#25257E

Darker −20%#1A1A56

Darker −30%#0E0E2F

Darker −40%#020208

More saturated +25%#1616C0

Less saturated −25%#4C4C8A

Channel breakdown

R49

G49

B165

Red49 (19.2%)

Green49 (19.2%)

Blue165 (64.7%)

Hue240°

Saturation (HSL)54.21%

Lightness41.96%

Dominant channelBlue

Hex per channelR 31 · G 31 · B A5

Keep nerding

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

#3131A5

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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