Recognised as Colour

#1F40BA

#1F40BA
Blue
Dark
Nearest: Slate blue

#1F40BA is a blue with RGB values 31, 64, 186 and HSL 227°, 71%, 43%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#1F40BA#1F40BA

HEX#1F40BA

RGBrgb(31, 64, 186)

RGB (0–1)0.1216, 0.251, 0.7294

RGB percentages12.2%, 25.1%, 72.9%

HSLhsl(227.2, 71.4%, 42.5%)

HSV / HSBhsv(227.2, 83.3%, 72.9%)

CMYK83.3%, 65.6%, 0%, 27.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,048,186

CSS custom property--colour: #1F40BA;

Brightness & contrast

Relative luminance0.07503WCAG 2.x, 0 is black and 1 is white

Perceived brightness81.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.4:1

Contrast with white8.4:1WCAG normal text: AAA

Contrast with black2.5:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#E0BF45

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0055BEno red cones; affects about 1% of men; ΔE 16.1 from the original

Deuteranopia#0046B8no green cones; the most common form, about 1% of men; ΔE 6.7 from the original

Tritanopia#006177no blue cones; rare, and affects men and women equally; ΔE 69.7 from the original

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

Contrast with white, large text8.4:1WCAG large text: AAA

Contrast with black, large text2.5:1WCAG large text: Fail

Named colours

Slate blue · ΔE 15.6 Royal blue · ΔE 17.2 Medium slateblue · ΔE 20.3 Rebecca purple · ΔE 21.6 Navy · ΔE 23.8 Dark blue · ΔE 24.1

Nearest named CSS colourSlate blue (#6A5ACD)ΔE 15.6, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BA991F

Analogous#1F8DBA, #4C1FBA

Triadic#BA1F40, #40BA1F

Split complementary#BA4C1F, #8DBA1F

Tetradic#BA1F8E, #BA991F, #1FBA4C

Tints, shades & saturation

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

Lighter +40%#B3C0F2

Lighter +30%#879CEB

Lighter +20%#5B78E4

Lighter +10%#3054DC

Darker −10%#18318E

Darker −20%#102263

Darker −30%#091337

Darker −40%#02040B

More saturated +25%#0430D5

Less saturated −25%#3A509F

Channel breakdown

R31

G64

B186

Red31 (12.2%)

Green64 (25.1%)

Blue186 (72.9%)

Hue227.23°

Saturation (HSL)71.43%

Lightness42.55%

Dominant channelBlue

Hex per channelR 1F · G 40 · B BA

Keep nerding

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

#1F40BA

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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