Recognised as Colour

#331B52

#331B52
Violet
Dark
Nearest: Dark slateblue

#331B52 is a violet with RGB values 51, 27, 82 and HSL 266°, 50%, 21%. It is a dark colour, so white text on it reaches 14.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#331B52#331B52

HEX#331B52

RGBrgb(51, 27, 82)

RGB (0–1)0.2, 0.1059, 0.3216

RGB percentages20%, 10.6%, 32.2%

HSLhsl(266.2, 50.5%, 21.4%)

HSV / HSBhsv(266.2, 67.1%, 32.2%)

CMYK37.8%, 67.1%, 0%, 67.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,349,330

CSS custom property--colour: #331B52;

Brightness & contrast

Relative luminance0.02097WCAG 2.x, 0 is black and 1 is white

Perceived brightness44.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.8:1

Contrast with white14.8:1WCAG normal text: AAA

Contrast with black1.42:1WCAG normal text: Fail

Greyscale equivalent#242424

Inverted#CCE4AD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002854no red cones; affects about 1% of men; ΔE 18.3 from the original

Deuteranopia#082751no green cones; the most common form, about 1% of men; ΔE 17.9 from the original

Tritanopia#2C2733no blue cones; rare, and affects men and women equally; ΔE 29.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.8:1WCAG large text: AAA

Contrast with black, large text1.42:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.6 Midnight blue · ΔE 21.3 Rebecca purple · ΔE 30.4 Indigo · ΔE 36.2 Purple · ΔE 37.4 Black · ΔE 41.7

Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.59, a distinctly different colour

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3A521B

Analogous#1B1E52, #4F1B52

Triadic#52331B, #1B5233

Split complementary#524F1B, #1E521B

Tetradic#521B1E, #3A521B, #1B524F

Tints, shades & saturation

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

Lighter +40%#966BCE

Lighter +30%#7B44C2

Lighter +20%#63349F

Lighter +10%#4B2878

Darker −10%#1B0E2C

Darker −20%#030205

Darker −30%#000000

Darker −40%#000000

More saturated +25%#310D60

Less saturated −25%#352944

Channel breakdown

R51

G27

B82

Red51 (20%)

Green27 (10.6%)

Blue82 (32.2%)

Hue266.18°

Saturation (HSL)50.46%

Lightness21.37%

Dominant channelBlue

Hex per channelR 33 · G 1B · B 52

Keep nerding

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

#331B52

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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