Recognised as Colour

#391BB1

#391BB1
Blue
Dark
Nearest: Dark blue

#391BB1 is a blue with RGB values 57, 27, 177 and HSL 252°, 74%, 40%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#391BB1#391BB1

HEX#391BB1

RGBrgb(57, 27, 177)

RGB (0–1)0.2235, 0.1059, 0.6941

RGB percentages22.4%, 10.6%, 69.4%

HSLhsl(252, 73.5%, 40%)

HSV / HSBhsv(252, 84.7%, 69.4%)

CMYK67.8%, 84.7%, 0%, 30.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,742,641

CSS custom property--colour: #391BB1;

Brightness & contrast

Relative luminance0.04828WCAG 2.x, 0 is black and 1 is white

Perceived brightness70.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.68:1

Contrast with white10.68:1WCAG normal text: AAA

Contrast with black1.97:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#C6E44E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0043B5no red cones; affects about 1% of men; ΔE 26.8 from the original

Deuteranopia#0038AEno green cones; the most common form, about 1% of men; ΔE 21.4 from the original

Tritanopia#004C69no blue cones; rare, and affects men and women equally; ΔE 80.5 from the original

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

Contrast with white, large text10.68:1WCAG large text: AAA

Contrast with black, large text1.97:1WCAG large text: Fail

Named colours

Dark blue · ΔE 12.7 Navy · ΔE 16.9 Indigo · ΔE 20.4 Blue violet · ΔE 22.5 Medium blue · ΔE 22.9 Dark orchid · ΔE 24

Nearest named CSS colourDark blue (#00008B)ΔE 12.72, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#93B11B

Analogous#1B48B1, #841BB1

Triadic#B1391B, #1BB139

Split complementary#B1841B, #48B11B

Tetradic#B11B48, #93B11B, #1BB184

Tints, shades & saturation

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

Lighter +40%#B6A7F2

Lighter +30%#917AEB

Lighter +20%#6C4EE4

Lighter +10%#4722DD

Darker −10%#2B1485

Darker −20%#1D0E59

Darker −30%#0E072C

Darker −40%#000000

More saturated +25%#2A01CB

Less saturated −25%#483598

Channel breakdown

R57

G27

B177

Red57 (22.4%)

Green27 (10.6%)

Blue177 (69.4%)

Hue252°

Saturation (HSL)73.53%

Lightness40%

Dominant channelBlue

Hex per channelR 39 · G 1B · B B1

Keep nerding

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

#391BB1

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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