Recognised as Colour

#001539

#001539
Blue
Dark
Nearest: Black

#001539 is a blue with RGB values 0, 21, 57 and HSL 218°, 100%, 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

#001539#001539

HEX#001539

RGBrgb(0, 21, 57)

RGB (0–1)0, 0.0824, 0.2235

RGB percentages0%, 8.2%, 22.4%

HSLhsl(217.9, 100%, 11.2%)

HSV / HSBhsv(217.9, 100%, 22.4%)

CMYK100%, 63.2%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,433

CSS custom property--colour: #001539;

Brightness & contrast

Relative luminance0.00832WCAG 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 18:1

Contrast with white18:1WCAG normal text: AAA

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

Greyscale equivalent#131313

Inverted#FFEAC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00193Ano red cones; affects about 1% of men; ΔE 3.5 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 25.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18:1WCAG large text: AAA

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

Named colours

Black · ΔE 28.2 Dark slateblue · ΔE 33.4 Midnight blue · ΔE 34.3 Dark slate grey · ΔE 38.2 Dim grey · ΔE 45.8 Steel blue · ΔE 47.1

Nearest named CSS colourBlack (#000000)ΔE 28.19, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#392400

Analogous#003239, #070039

Triadic#390015, #153900

Split complementary#390800, #323900

Tetradic#390032, #392400, #003907

Tints, shades & saturation

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

Lighter +40%#0662FF

Lighter +30%#004DD2

Lighter +20%#003B9F

Lighter +10%#00286C

Darker −10%#000206

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001539

Less saturated −25%#071732

Channel breakdown

G21

B57

Red0 (0%)

Green21 (8.2%)

Blue57 (22.4%)

Hue217.89°

Saturation (HSL)100%

Lightness11.18%

Dominant channelBlue

Hex per channelR 00 · G 15 · B 39

Keep nerding

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

#001539

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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