Colour

#1F00AD

#1F00AD
Blue
Dark
Nearest: Dark blue

#1F00AD is a blue with RGB values 31, 0, 173 and HSL 251°, 100%, 34%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1F00AD#1F00AD

HEX#1F00AD

RGBrgb(31, 0, 173)

RGB (0–1)0.1216, 0, 0.6784

RGB percentages12.2%, 0%, 67.8%

HSLhsl(250.8, 100%, 33.9%)

HSV / HSBhsv(250.8, 100%, 67.8%)

CMYK82.1%, 100%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,031,789

CSS custom property--colour: #1F00AD;

Brightness & contrast

Relative luminance0.03308WCAG 2.x, 0 is black and 1 is white

Perceived brightness60.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.64:1

Contrast with white12.64:1WCAG normal text: AAA

Contrast with black1.66:1WCAG normal text: Fail

Greyscale equivalent#131313

Inverted#E0FF52

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#003BB1no red cones; affects about 1% of men; ΔE 30.6 from the original

Deuteranopia#002AABno green cones; the most common form, about 1% of men; ΔE 20.3 from the original

Tritanopia#004664no 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 text12.64:1WCAG large text: AAA

Contrast with black, large text1.66:1WCAG large text: Fail

Named colours

Dark blue · ΔE 15.1 Medium blue · ΔE 15.3 Navy · ΔE 20.3 Blue violet · ΔE 23.7 Dark violet · ΔE 26.2 Indigo · ΔE 26.6

Nearest named CSS colourDark blue (#00008B)ΔE 15.06, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#8EAD00

Analogous#0038AD, #7600AD

Triadic#AD1F00, #00AD1F

Split complementary#AD7500, #38AD00

Tetradic#AD0037, #8EAD00, #00AD75

Tints, shades & saturation

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

Lighter +40%#927AFF

Lighter +30%#6847FF

Lighter +20%#3E14FF

Lighter +10%#2800E0

Darker −10%#16007A

Darker −20%#0D0047

Darker −30%#040014

Darker −40%#000000

More saturated +25%#1F00AD

Less saturated −25%#2D1697

Channel breakdown

R31

B173

Red31 (12.2%)

Green0 (0%)

Blue173 (67.8%)

Hue250.75°

Saturation (HSL)100%

Lightness33.92%

Dominant channelBlue

Hex per channelR 1F · G 00 · B AD

Keep nerding

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#1F00AD

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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