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Recognised as Colour

#001648

  • #001648
  • Blue
  • Dark
  • Nearest: Midnight blue

#001648 is a blue with RGB values 0, 22, 72 and HSL 222°, 100%, 14%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001648#001648
HEX#001648
RGBrgb(0, 22, 72)
RGB (0–1)0, 0.0863, 0.2824
RGB percentages0%, 8.6%, 28.2%
HSLhsl(221.7, 100%, 14.1%)
HSV / HSBhsv(221.7, 100%, 28.2%)
CMYK100%, 69.4%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,704
CSS custom property--colour: #001648;

Brightness & contrast

Relative luminance0.01042WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.38:1
Contrast with white17.38:1WCAG normal text: AAA
Contrast with black1.21:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#FFE9B7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001E4Ano red cones; affects about 1% of men; ΔE 6.8 from the original
Deuteranopia#001747no green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#00232Cno blue cones; rare, and affects men and women equally; ΔE 33.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.38:1WCAG large text: AAA
Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 24.1Dark slateblue · ΔE 25.7Black · ΔE 37.9Rebecca purple · ΔE 39Indigo · ΔE 43.2Navy · ΔE 45.2
Nearest named CSS colourMidnight blue (#191970)ΔE 24.1, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#483200
Analogous#003A48, #0E0048
Triadic#480016, #164800
Split complementary#480E00, #3A4800
Tetradic#48003A, #483200, #00480E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#155CFF
Lighter +30%#0045E1
Lighter +20%#0035AE
Lighter +10%#00267B
Darker −10%#000615
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001648
Less saturated −25%#09193F

Channel breakdown

R0
G22
B72
Red0 (0%)
Green22 (8.6%)
Blue72 (28.2%)
Hue221.67°
Saturation (HSL)100%
Lightness14.12%
Dominant channelBlue
Hex per channelR 00 · G 16 · B 48

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Every value on this page was computed from “hex 001648” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.