Colour

#0440BB

#0440BB
Blue
Dark
Nearest: Slate blue

#0440BB is a blue with RGB values 4, 64, 187 and HSL 220°, 96%, 37%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#0440BB#0440BB

HEX#0440BB

RGBrgb(4, 64, 187)

RGB (0–1)0.0157, 0.251, 0.7333

RGB percentages1.6%, 25.1%, 73.3%

HSLhsl(220.3, 95.8%, 37.5%)

HSV / HSBhsv(220.3, 97.9%, 73.3%)

CMYK97.9%, 65.8%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer278,715

CSS custom property--colour: #0440BB;

Brightness & contrast

Relative luminance0.0728WCAG 2.x, 0 is black and 1 is white

Perceived brightness80 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.55:1

Contrast with white8.55:1WCAG normal text: AAA

Contrast with black2.46:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#FBBF44

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0055BFno red cones; affects about 1% of men; ΔE 15.6 from the original

Deuteranopia#0044B9no green cones; the most common form, about 1% of men; ΔE 4.4 from the original

Tritanopia#006278no blue cones; rare, and affects men and women equally; ΔE 70.2 from the original

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

Contrast with white, large text8.55:1WCAG large text: AAA

Contrast with black, large text2.46:1WCAG large text: Fail

Named colours

Slate blue · ΔE 17 Royal blue · ΔE 17.4 Medium slateblue · ΔE 21.3 Rebecca purple · ΔE 23.2 Navy · ΔE 24.1 Dark blue · ΔE 24.3

Nearest named CSS colourSlate blue (#6A5ACD)ΔE 16.95, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BB7F04

Analogous#049CBB, #2304BB

Triadic#BB0440, #40BB04

Split complementary#BB2304, #9CBB04

Tetradic#BB049C, #BB7F04, #04BB23

Tints, shades & saturation

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

Lighter +40%#8EB3FD

Lighter +30%#5C91FC

Lighter +20%#2B6FFA

Lighter +10%#0551ED

Darker −10%#032F89

Darker −20%#021E57

Darker −30%#010D25

Darker −40%#000000

More saturated +25%#003FBF

Less saturated −25%#1C48A3

Channel breakdown

G64

B187

Red4 (1.6%)

Green64 (25.1%)

Blue187 (73.3%)

Hue220.33°

Saturation (HSL)95.81%

Lightness37.45%

Dominant channelBlue

Hex per channelR 04 · G 40 · B BB

Keep nerding

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

#0440BB

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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