Colour

#00339B

#00339B
Blue
Dark
Nearest: Midnight blue

#00339B is a blue with RGB values 0, 51, 155 and HSL 220°, 100%, 30%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00339B#00339B

HEX#00339B

RGBrgb(0, 51, 155)

RGB (0–1)0, 0.2, 0.6078

RGB percentages0%, 20%, 60.8%

HSLhsl(220.3, 100%, 30.4%)

HSV / HSBhsv(220.3, 100%, 60.8%)

CMYK100%, 67.1%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,211

CSS custom property--colour: #00339B;

Brightness & contrast

Relative luminance0.04734WCAG 2.x, 0 is black and 1 is white

Perceived brightness65.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.79:1

Contrast with white10.79:1WCAG normal text: AAA

Contrast with black1.95:1WCAG normal text: Fail

Greyscale equivalent#303030

Inverted#FFCC64

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00449Eno red cones; affects about 1% of men; ΔE 13.2 from the original

Deuteranopia#003799no green cones; the most common form, about 1% of men; ΔE 4.5 from the original

Tritanopia#004F62no blue cones; rare, and affects men and women equally; ΔE 61.1 from the original

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

Contrast with white, large text10.79:1WCAG large text: AAA

Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.7 Dark slateblue · ΔE 18.9 Rebecca purple · ΔE 19.7 Slate blue · ΔE 20.5 Navy · ΔE 22.5 Royal blue · ΔE 22.8

Nearest named CSS colourMidnight blue (#191970)ΔE 14.65, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#9B6800

Analogous#00819B, #1A009B

Triadic#9B0033, #339B00

Split complementary#9B1A00, #819B00

Tetradic#9B0081, #9B6800, #009B1A

Tints, shades & saturation

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

Lighter +40%#689AFF

Lighter +30%#3577FF

Lighter +20%#0255FF

Lighter +10%#0044CE

Darker −10%#002268

Darker −20%#001135

Darker −30%#000102

Darker −40%#000000

More saturated +25%#00339B

Less saturated −25%#133A88

Channel breakdown

G51

B155

Red0 (0%)

Green51 (20%)

Blue155 (60.8%)

Hue220.26°

Saturation (HSL)100%

Lightness30.39%

Dominant channelBlue

Hex per channelR 00 · G 33 · B 9B

Keep nerding

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#00339B

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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