Colour

#181C2A

#181C2A
Blue
Dark
Nearest: Black

#181C2A is a blue with RGB values 24, 28, 42 and HSL 227°, 27%, 13%. It is a dark colour, so white text on it reaches 17:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181C2A#181C2A

HEX#181C2A

RGBrgb(24, 28, 42)

RGB (0–1)0.0941, 0.1098, 0.1647

RGB percentages9.4%, 11%, 16.5%

HSLhsl(226.7, 27.3%, 12.9%)

HSV / HSBhsv(226.7, 42.9%, 16.5%)

CMYK42.9%, 33.3%, 0%, 83.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,580,074

CSS custom property--colour: #181C2A;

Brightness & contrast

Relative luminance0.01192WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.96:1

Contrast with white16.96:1WCAG normal text: AAA

Contrast with black1.24:1WCAG normal text: Fail

Greyscale equivalent#1C1C1C

Inverted#E7E3D5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#181D2Bno red cones; affects about 1% of men; ΔE 0.6 from the original

Deuteranopia#161C2Ano green cones; the most common form, about 1% of men; ΔE 0.8 from the original

Tritanopia#131F21no blue cones; rare, and affects men and women equally; ΔE 10 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.96:1WCAG large text: AAA

Contrast with black, large text1.24:1WCAG large text: Fail

Named colours

Black · ΔE 14.8 Dark slate grey · ΔE 26 Dim grey · ΔE 35.5 Slate grey · ΔE 42.6 Gray · ΔE 44.3 Dark slateblue · ΔE 44.6

Nearest named CSS colourBlack (#000000)ΔE 14.75, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2A2618

Analogous#18252A, #1D182A

Triadic#2A181C, #1C2A18

Split complementary#2A1D18, #252A18

Tetradic#2A1825, #2A2618, #182A1D

Tints, shades & saturation

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

Lighter +40%#6675A8

Lighter +30%#505D8B

Lighter +20%#3D476B

Lighter +10%#2B324A

Darker −10%#05060A

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#101732

Less saturated −25%#202122

Channel breakdown

R24

G28

B42

Red24 (9.4%)

Green28 (11%)

Blue42 (16.5%)

Hue226.67°

Saturation (HSL)27.27%

Lightness12.94%

Dominant channelBlue

Hex per channelR 18 · G 1C · B 2A

Keep nerding

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

#181C2A

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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