Recognised as Colour

#011539

#011539
Blue
Dark
Nearest: Black

#011539 is a blue with RGB values 1, 21, 57 and HSL 219°, 97%, 11%. It is a dark colour, so white text on it reaches 18:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#011539#011539

HEX#011539

RGBrgb(1, 21, 57)

RGB (0–1)0.0039, 0.0824, 0.2235

RGB percentages0.4%, 8.2%, 22.4%

HSLhsl(218.6, 96.6%, 11.4%)

HSV / HSBhsv(218.6, 98.2%, 22.4%)

CMYK98.2%, 63.2%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer70,969

CSS custom property--colour: #011539;

Brightness & contrast

Relative luminance0.00838WCAG 2.x, 0 is black and 1 is white

Perceived brightness25.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.99:1

Contrast with white17.99:1WCAG normal text: AAA

Contrast with black1.17:1WCAG normal text: Fail

Greyscale equivalent#131313

Inverted#FEEAC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00193Ano red cones; affects about 1% of men; ΔE 3.6 from the original

Deuteranopia#001438no green cones; the most common form, about 1% of men; ΔE 0.5 from the original

Tritanopia#001E24no blue cones; rare, and affects men and women equally; ΔE 25.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.99:1WCAG large text: AAA

Contrast with black, large text1.17:1WCAG large text: Fail

Named colours

Black · ΔE 28.2 Dark slateblue · ΔE 33.3 Midnight blue · ΔE 34.2 Dark slate grey · ΔE 38.2 Dim grey · ΔE 45.8 Steel blue · ΔE 47.1

Nearest named CSS colourBlack (#000000)ΔE 28.18, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#392501

Analogous#013139, #090139

Triadic#390115, #153901

Split complementary#390901, #313901

Tetradic#390131, #392501, #013909

Tints, shades & saturation

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

Lighter +40%#0B61FB

Lighter +30%#044CCF

Lighter +20%#033A9D

Lighter +10%#02276B

Darker −10%#000307

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00153A

Less saturated −25%#081732

Channel breakdown

G21

B57

Red1 (0.4%)

Green21 (8.2%)

Blue57 (22.4%)

Hue218.57°

Saturation (HSL)96.55%

Lightness11.37%

Dominant channelBlue

Hex per channelR 01 · G 15 · B 39

Keep nerding

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

#011539

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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