Colour

#1F00A6

#1F00A6
Blue
Dark
Nearest: Dark blue

#1F00A6 is a blue with RGB values 31, 0, 166 and HSL 251°, 100%, 33%. 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

#1F00A6#1F00A6

HEX#1F00A6

RGBrgb(31, 0, 166)

RGB (0–1)0.1216, 0, 0.651

RGB percentages12.2%, 0%, 65.1%

HSLhsl(251.2, 100%, 32.5%)

HSV / HSBhsv(251.2, 100%, 65.1%)

CMYK81.3%, 100%, 0%, 34.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,031,782

CSS custom property--colour: #1F00A6;

Brightness & contrast

Relative luminance0.03044WCAG 2.x, 0 is black and 1 is white

Perceived brightness58.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.05:1

Contrast with white13.05:1WCAG normal text: AAA

Contrast with black1.61:1WCAG normal text: Fail

Greyscale equivalent#131313

Inverted#E0FF59

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0038AAno red cones; affects about 1% of men; ΔE 29.3 from the original

Deuteranopia#0029A4no green cones; the most common form, about 1% of men; ΔE 20.4 from the original

Tritanopia#004260no blue cones; rare, and affects men and women equally; ΔE 83.5 from the original

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

Contrast with white, large text13.05:1WCAG large text: AAA

Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark blue · ΔE 11.9 Navy · ΔE 17.1 Medium blue · ΔE 18.6 Indigo · ΔE 23.7 Blue violet · ΔE 25.1 Dark violet · ΔE 27.4

Nearest named CSS colourDark blue (#00008B)ΔE 11.88, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#87A600

Analogous#0034A6, #7200A6

Triadic#A61F00, #00A61F

Split complementary#A67200, #34A600

Tetradic#A60034, #87A600, #00A672

Tints, shades & saturation

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

Lighter +40%#8D73FF

Lighter +30%#6440FF

Lighter +20%#3A0DFF

Lighter +10%#2900D9

Darker −10%#150073

Darker −20%#0C0040

Darker −30%#02000D

Darker −40%#000000

More saturated +25%#1F00A6

Less saturated −25%#2C1591

Channel breakdown

R31

B166

Red31 (12.2%)

Green0 (0%)

Blue166 (65.1%)

Hue251.2°

Saturation (HSL)100%

Lightness32.55%

Dominant channelBlue

Hex per channelR 1F · G 00 · B A6

Keep nerding

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#1F00A6

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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