Colour

#001B3B

#001B3B
Blue
Dark
Nearest: Black

#001B3B is a blue with RGB values 0, 27, 59 and HSL 213°, 100%, 12%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#001B3B#001B3B

HEX#001B3B

RGBrgb(0, 27, 59)

RGB (0–1)0, 0.1059, 0.2314

RGB percentages0%, 10.6%, 23.1%

HSLhsl(212.5, 100%, 11.6%)

HSV / HSBhsv(212.5, 100%, 23.1%)

CMYK100%, 54.2%, 0%, 76.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,971

CSS custom property--colour: #001B3B;

Brightness & contrast

Relative luminance0.011WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.21:1

Contrast with white17.21:1WCAG normal text: AAA

Contrast with black1.22:1WCAG normal text: Fail

Greyscale equivalent#181818

Inverted#FFE4C4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#081E3Cno red cones; affects about 1% of men; ΔE 2.4 from the original

Deuteranopia#00193Ano green cones; the most common form, about 1% of men; ΔE 1.5 from the original

Tritanopia#002328no blue cones; rare, and affects men and women equally; ΔE 22.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.21:1WCAG large text: AAA

Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Black · ΔE 25.9 Dark slate grey · ΔE 33.5 Dark slateblue · ΔE 35.3 Midnight blue · ΔE 38 Dim grey · ΔE 42.1 Steel blue · ΔE 44.4

Nearest named CSS colourBlack (#000000)ΔE 25.94, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3B2000

Analogous#00383B, #03003B

Triadic#3B001B, #1B3B00

Split complementary#3B0300, #383B00

Tetradic#3B0038, #3B2000, #003B03

Tints, shades & saturation

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

Lighter +40%#0879FF

Lighter +30%#0061D4

Lighter +20%#004AA1

Lighter +10%#00326E

Darker −10%#000408

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001B3B

Less saturated −25%#071C34

Channel breakdown

G27

B59

Red0 (0%)

Green27 (10.6%)

Blue59 (23.1%)

Hue212.54°

Saturation (HSL)100%

Lightness11.57%

Dominant channelBlue

Hex per channelR 00 · G 1B · B 3B

Keep nerding

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

#001B3B

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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