Colour

#18248F

#18248F
Blue
Dark
Nearest: Midnight blue

#18248F is a blue with RGB values 24, 36, 143 and HSL 234°, 71%, 33%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18248F#18248F

HEX#18248F

RGBrgb(24, 36, 143)

RGB (0–1)0.0941, 0.1412, 0.5608

RGB percentages9.4%, 14.1%, 56.1%

HSLhsl(233.9, 71.3%, 32.7%)

HSV / HSBhsv(233.9, 83.2%, 56.1%)

CMYK83.2%, 74.8%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,582,223

CSS custom property--colour: #18248F;

Brightness & contrast

Relative luminance0.03439WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.44:1

Contrast with white12.44:1WCAG normal text: AAA

Contrast with black1.69:1WCAG normal text: Fail

Greyscale equivalent#292929

Inverted#E7DB70

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#003A92no red cones; affects about 1% of men; ΔE 17.3 from the original

Deuteranopia#002E8Dno green cones; the most common form, about 1% of men; ΔE 9.6 from the original

Tritanopia#004357no blue cones; rare, and affects men and women equally; ΔE 63.2 from the original

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

Contrast with white, large text12.44:1WCAG large text: AAA

Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12.4 Navy · ΔE 15.3 Indigo · ΔE 16.8 Rebecca purple · ΔE 18 Dark blue · ΔE 18.4 Dark slateblue · ΔE 22.1

Nearest named CSS colourMidnight blue (#191970)ΔE 12.39, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#8F8318

Analogous#18608F, #47188F

Triadic#8F1824, #248F18

Split complementary#8F4718, #608F18

Tetradic#8F1860, #8F8318, #188F47

Tints, shades & saturation

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

Lighter +40%#8892EB

Lighter +30%#5C6AE4

Lighter +20%#3142DC

Lighter +10%#1F2FBB

Darker −10%#111963

Darker −20%#090E38

Darker −30%#02030C

Darker −40%#000000

More saturated +25%#0313A4

Less saturated −25%#2D357A

Channel breakdown

R24

G36

B143

Red24 (9.4%)

Green36 (14.1%)

Blue143 (56.1%)

Hue233.95°

Saturation (HSL)71.26%

Lightness32.75%

Dominant channelBlue

Hex per channelR 18 · G 24 · B 8F

Keep nerding

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#18248F

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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