Colour

#001F77

#001F77
Blue
Dark
Nearest: Midnight blue

#001F77 is a blue with RGB values 0, 31, 119 and HSL 224°, 100%, 23%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001F77#001F77

HEX#001F77

RGBrgb(0, 31, 119)

RGB (0–1)0, 0.1216, 0.4667

RGB percentages0%, 12.2%, 46.7%

HSLhsl(224.4, 100%, 23.3%)

HSV / HSBhsv(224.4, 100%, 46.7%)

CMYK100%, 73.9%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,055

CSS custom property--colour: #001F77;

Brightness & contrast

Relative luminance0.02312WCAG 2.x, 0 is black and 1 is white

Perceived brightness46.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.36:1

Contrast with white14.36:1WCAG normal text: AAA

Contrast with black1.46:1WCAG normal text: Fail

Greyscale equivalent#1F1F1F

Inverted#FFE088

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00307Ano red cones; affects about 1% of men; ΔE 13.5 from the original

Deuteranopia#002475no green cones; the most common form, about 1% of men; ΔE 5.4 from the original

Tritanopia#003848no blue cones; rare, and affects men and women equally; ΔE 54.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text14.36:1WCAG large text: AAA

Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 4.1 Dark slateblue · ΔE 17.3 Rebecca purple · ΔE 21.8 Navy · ΔE 22.9 Indigo · ΔE 23.1 Dark blue · ΔE 27.3

Nearest named CSS colourMidnight blue (#191970)ΔE 4.06, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#775800

Analogous#005B77, #1C0077

Triadic#77001F, #1F7700

Split complementary#771D00, #5A7700

Tetradic#77005B, #775800, #00771D

Tints, shades & saturation

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

Lighter +40%#4475FF

Lighter +30%#114FFF

Lighter +20%#003ADD

Lighter +10%#002CAA

Darker −10%#001244

Darker −20%#000411

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001F77

Less saturated −25%#0F2668

Channel breakdown

G31

B119

Red0 (0%)

Green31 (12.2%)

Blue119 (46.7%)

Hue224.37°

Saturation (HSL)100%

Lightness23.33%

Dominant channelBlue

Hex per channelR 00 · G 1F · B 77

Keep nerding

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#001F77

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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