Colour

#181A44

#181A44
Blue
Dark
Nearest: Dark slateblue

#181A44 is a blue with RGB values 24, 26, 68 and HSL 237°, 48%, 18%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#181A44#181A44

HEX#181A44

RGBrgb(24, 26, 68)

RGB (0–1)0.0941, 0.102, 0.2667

RGB percentages9.4%, 10.2%, 26.7%

HSLhsl(237.3, 47.8%, 18%)

HSV / HSBhsv(237.3, 64.7%, 26.7%)

CMYK64.7%, 61.8%, 0%, 73.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,579,588

CSS custom property--colour: #181A44;

Brightness & contrast

Relative luminance0.0135WCAG 2.x, 0 is black and 1 is white

Perceived brightness33.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.53:1

Contrast with white16.53:1WCAG normal text: AAA

Contrast with black1.27:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#E7E5BB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#012145no red cones; affects about 1% of men; ΔE 9.1 from the original

Deuteranopia#001D43no green cones; the most common form, about 1% of men; ΔE 7 from the original

Tritanopia#01242Cno blue cones; rare, and affects men and women equally; ΔE 29.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.53:1WCAG large text: AAA

Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.3 Midnight blue · ΔE 29.1 Black · ΔE 32.5 Dark slate grey · ΔE 39.8 Rebecca purple · ΔE 41.2 Dim grey · ΔE 44.6

Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.31, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#444218

Analogous#183044, #2C1844

Triadic#44181A, #1A4418

Split complementary#442C18, #304418

Tetradic#441830, #444218, #18442C

Tints, shades & saturation

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

Lighter +40%#6165C7

Lighter +30%#4045B5

Lighter +20%#33378F

Lighter +10%#25286A

Darker −10%#0B0C1E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D1050

Less saturated −25%#242439

Channel breakdown

R24

G26

B68

Red24 (9.4%)

Green26 (10.2%)

Blue68 (26.7%)

Hue237.27°

Saturation (HSL)47.83%

Lightness18.04%

Dominant channelBlue

Hex per channelR 18 · G 1A · B 44

Keep nerding

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#181A44

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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