Colour

#0040F3

#0040F3
Blue
Dark
Nearest: Medium blue

#0040F3 is a blue with RGB values 0, 64, 243 and HSL 224°, 100%, 48%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#0040F3#0040F3

HEX#0040F3

RGBrgb(0, 64, 243)

RGB (0–1)0, 0.251, 0.9529

RGB percentages0%, 25.1%, 95.3%

HSLhsl(224.2, 100%, 47.6%)

HSV / HSBhsv(224.2, 100%, 95.3%)

CMYK100%, 73.7%, 0%, 4.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,627

CSS custom property--colour: #0040F3;

Brightness & contrast

Relative luminance0.10138WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.94:1

Contrast with white6.94:1WCAG normal text: AA

Contrast with black3.03:1WCAG normal text: Fail

Greyscale equivalent#3F3F3F

Inverted#FFBF0C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0065F8no red cones; affects about 1% of men; ΔE 25.7 from the original

Deuteranopia#004EF0no green cones; the most common form, about 1% of men; ΔE 11.5 from the original

Tritanopia#007697no blue cones; rare, and affects men and women equally; ΔE 96.1 from the original

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

Contrast with white, large text6.94:1WCAG large text: AAA

Contrast with black, large text3.03:1WCAG large text: AA

Named colours

Medium blue · ΔE 18.6 Blue violet · ΔE 23.4 Blue · ΔE 30.6 Dark violet · ΔE 30.7 Medium slateblue · ΔE 32.3 Dark blue · ΔE 32.8

Nearest named CSS colourMedium blue (#0000CD)ΔE 18.56, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#F3B300

Analogous#00BAF3, #3900F3

Triadic#F30040, #40F300

Split complementary#F33900, #BAF300

Tetradic#F300BA, #F3B300, #00F339

Tints, shades & saturation

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

Lighter +40%#C0D1FF

Lighter +30%#8DABFF

Lighter +20%#5A85FF

Lighter +10%#2760FF

Darker −10%#0033C0

Darker −20%#00258D

Darker −30%#00185A

Darker −40%#000A27

More saturated +25%#0040F3

Less saturated −25%#1E4ED5

Channel breakdown

G64

B243

Red0 (0%)

Green64 (25.1%)

Blue243 (95.3%)

Hue224.2°

Saturation (HSL)100%

Lightness47.65%

Dominant channelBlue

Hex per channelR 00 · G 40 · B F3

Keep nerding

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

#0040F3

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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