Colour

#18183E

#18183E
Blue
Dark
Nearest: Black

#18183E is a blue with RGB values 24, 24, 62 and HSL 240°, 44%, 17%. It is a dark colour, so white text on it reaches 16.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#18183E#18183E

HEX#18183E

RGBrgb(24, 24, 62)

RGB (0–1)0.0941, 0.0941, 0.2431

RGB percentages9.4%, 9.4%, 24.3%

HSLhsl(240, 44.2%, 16.9%)

HSV / HSBhsv(240, 61.3%, 24.3%)

CMYK61.3%, 61.3%, 0%, 75.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,579,070

CSS custom property--colour: #18183E;

Brightness & contrast

Relative luminance0.01195WCAG 2.x, 0 is black and 1 is white

Perceived brightness30.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.95:1

Contrast with white16.95:1WCAG normal text: AAA

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

Greyscale equivalent#1B1B1B

Inverted#E7E7C1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#041E3Fno red cones; affects about 1% of men; ΔE 8.2 from the original

Deuteranopia#011B3Dno green cones; the most common form, about 1% of men; ΔE 7.3 from the original

Tritanopia#072128no blue cones; rare, and affects men and women equally; ΔE 26.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.95:1WCAG large text: AAA

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

Named colours

Black · ΔE 29.7 Dark slateblue · ΔE 29.9 Midnight blue · ΔE 31.7 Dark slate grey · ΔE 38.4 Rebecca purple · ΔE 43.6 Dim grey · ΔE 43.8

Nearest named CSS colourBlack (#000000)ΔE 29.66, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3E3E18

Analogous#182B3E, #2B183E

Triadic#3E1818, #183E18

Split complementary#3E2B18, #2B3E18

Tetradic#3E182B, #3E3E18, #183E2B

Tints, shades & saturation

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

Lighter +40%#6060C2

Lighter +30%#4343AC

Lighter +20%#343488

Lighter +10%#262663

Darker −10%#0A0A19

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D0D49

Less saturated −25%#232333

Channel breakdown

R24

G24

B62

Red24 (9.4%)

Green24 (9.4%)

Blue62 (24.3%)

Hue240°

Saturation (HSL)44.19%

Lightness16.86%

Dominant channelBlue

Hex per channelR 18 · G 18 · B 3E

Keep nerding

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

#18183E

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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