Colour

#18243C

#18243C
Blue
Dark
Nearest: Black

#18243C is a blue with RGB values 24, 36, 60 and HSL 220°, 43%, 16%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#18243C#18243C

HEX#18243C

RGBrgb(24, 36, 60)

RGB (0–1)0.0941, 0.1412, 0.2353

RGB percentages9.4%, 14.1%, 23.5%

HSLhsl(220, 42.9%, 16.5%)

HSV / HSBhsv(220, 60%, 23.5%)

CMYK60%, 40%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,582,140

CSS custom property--colour: #18243C;

Brightness & contrast

Relative luminance0.01782WCAG 2.x, 0 is black and 1 is white

Perceived brightness36.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.48:1

Contrast with white15.48:1WCAG normal text: AAA

Contrast with black1.36:1WCAG normal text: Fail

Greyscale equivalent#232323

Inverted#E7DBC3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1B263Dno red cones; affects about 1% of men; ΔE 1.3 from the original

Deuteranopia#16233Bno green cones; the most common form, about 1% of men; ΔE 0.6 from the original

Tritanopia#07292Dno blue cones; rare, and affects men and women equally; ΔE 17.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.48:1WCAG large text: AAA

Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Black · ΔE 22.5 Dark slate grey · ΔE 26.2 Dim grey · ΔE 34.7 Dark slateblue · ΔE 37.7 Slate grey · ΔE 39.4 Steel blue · ΔE 41.7

Nearest named CSS colourBlack (#000000)ΔE 22.46, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3C3018

Analogous#18363C, #1E183C

Triadic#3C1824, #243C18

Split complementary#3C1E18, #363C18

Tetradic#3C1836, #3C3018, #183C1E

Tints, shades & saturation

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

Lighter +40%#6080C0

Lighter +30%#4466A9

Lighter +20%#355085

Lighter +10%#273A60

Darker −10%#090E18

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D2146

Less saturated −25%#222731

Channel breakdown

R24

G36

B60

Red24 (9.4%)

Green36 (14.1%)

Blue60 (23.5%)

Hue220°

Saturation (HSL)42.86%

Lightness16.47%

Dominant channelBlue

Hex per channelR 18 · G 24 · B 3C

Keep nerding

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

#18243C

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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