Colour

#311B72

#311B72
Violet
Dark
Nearest: Midnight blue

#311B72 is a violet with RGB values 49, 27, 114 and HSL 255°, 62%, 28%. It is a dark colour, so white text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#311B72#311B72

HEX#311B72

RGBrgb(49, 27, 114)

RGB (0–1)0.1922, 0.1059, 0.4471

RGB percentages19.2%, 10.6%, 44.7%

HSLhsl(255.2, 61.7%, 27.6%)

HSV / HSBhsv(255.2, 76.3%, 44.7%)

CMYK57%, 76.3%, 0%, 55.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,218,290

CSS custom property--colour: #311B72;

Brightness & contrast

Relative luminance0.02652WCAG 2.x, 0 is black and 1 is white

Perceived brightness51.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.72:1

Contrast with white13.72:1WCAG normal text: AAA

Contrast with black1.53:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#CEE48D

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002F75no red cones; affects about 1% of men; ΔE 18.2 from the original

Deuteranopia#002B70no green cones; the most common form, about 1% of men; ΔE 17.4 from the original

Tritanopia#153345no blue cones; rare, and affects men and women equally; ΔE 50.3 from the original

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

Contrast with white, large text13.72:1WCAG large text: AAA

Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 5 Dark slateblue · ΔE 15.4 Rebecca purple · ΔE 16.7 Indigo · ΔE 18.8 Navy · ΔE 23.3 Dark blue · ΔE 27.8

Nearest named CSS colourMidnight blue (#191970)ΔE 5.02, clearly different but related

Hue familyviolet

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5C721B

Analogous#1B3072, #5D1B72

Triadic#72311B, #1B7231

Split complementary#725D1B, #30721B

Tetradic#721B30, #5C721B, #1B725D

Tints, shades & saturation

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

Lighter +40%#937ADF

Lighter +30%#7250D6

Lighter +20%#542FC4

Lighter +10%#43259B

Darker −10%#1F1149

Darker −20%#0E0720

Darker −30%#000000

Darker −40%#000000

More saturated +25%#280984

Less saturated −25%#3A2D60

Channel breakdown

R49

G27

B114

Red49 (19.2%)

Green27 (10.6%)

Blue114 (44.7%)

Hue255.17°

Saturation (HSL)61.7%

Lightness27.65%

Dominant channelBlue

Hex per channelR 31 · G 1B · B 72

Keep nerding

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

#311B72

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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