Colour

#0303AB

#0303AB
Blue
Dark
Nearest: Dark blue

#0303AB is a blue with RGB values 3, 3, 171 and HSL 240°, 97%, 34%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#0303AB#0303AB

HEX#0303AB

RGBrgb(3, 3, 171)

RGB (0–1)0.0118, 0.0118, 0.6706

RGB percentages1.2%, 1.2%, 67.1%

HSLhsl(240, 96.6%, 34.1%)

HSV / HSBhsv(240, 98.2%, 67.1%)

CMYK98.2%, 98.2%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer197,547

CSS custom property--colour: #0303AB;

Brightness & contrast

Relative luminance0.03025WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.08:1

Contrast with white13.08:1WCAG normal text: AAA

Contrast with black1.6:1WCAG normal text: Fail

Greyscale equivalent#0F0F0F

Inverted#FCFC54

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0039AFno red cones; affects about 1% of men; ΔE 29.1 from the original

Deuteranopia#0027A9no green cones; the most common form, about 1% of men; ΔE 18.1 from the original

Tritanopia#004663no blue cones; rare, and affects men and women equally; ΔE 87.1 from the original

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

Contrast with white, large text13.08:1WCAG large text: AAA

Contrast with black, large text1.6:1WCAG large text: Fail

Named colours

Dark blue · ΔE 14.1 Medium blue · ΔE 16 Navy · ΔE 19.4 Blue violet · ΔE 25.5 Indigo · ΔE 26.8 Dark violet · ΔE 28.3

Nearest named CSS colourDark blue (#00008B)ΔE 14.12, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#ABAB03

Analogous#0357AB, #5703AB

Triadic#AB0303, #03AB03

Split complementary#AB5703, #57AB03

Tetradic#AB0357, #ABAB03, #03AB57

Tints, shades & saturation

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

Lighter +40%#7D7DFD

Lighter +30%#4B4BFC

Lighter +20%#1919FB

Lighter +10%#0404DD

Darker −10%#020279

Darker −20%#010147

Darker −30%#000015

Darker −40%#000000

More saturated +25%#0000AE

Less saturated −25%#191995

Channel breakdown

B171

Red3 (1.2%)

Green3 (1.2%)

Blue171 (67.1%)

Hue240°

Saturation (HSL)96.55%

Lightness34.12%

Dominant channelBlue

Hex per channelR 03 · G 03 · B AB

Keep nerding

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#0303AB

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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