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Recognised as Colour

#001644

  • #001644
  • Blue
  • Dark
  • Nearest: Midnight blue

#001644 is a blue with RGB values 0, 22, 68 and HSL 221°, 100%, 13%. It is a dark colour, so white text on it reaches 17.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001644#001644
HEX#001644
RGBrgb(0, 22, 68)
RGB (0–1)0, 0.0863, 0.2667
RGB percentages0%, 8.6%, 26.7%
HSLhsl(220.6, 100%, 13.3%)
HSV / HSBhsv(220.6, 100%, 26.7%)
CMYK100%, 67.6%, 0%, 73.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,700
CSS custom property--colour: #001644;

Brightness & contrast

Relative luminance0.00991WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.53:1
Contrast with white17.53:1WCAG normal text: AAA
Contrast with black1.2:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#FFE9BB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001D46no red cones; affects about 1% of men; ΔE 5.9 from the original
Deuteranopia#001643no green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#00222Ano blue cones; rare, and affects men and women equally; ΔE 31.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.53:1WCAG large text: AAA
Contrast with black, large text1.2:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 27Dark slateblue · ΔE 27.6Black · ΔE 35.1Rebecca purple · ΔE 41.4Dark slate grey · ΔE 43.3Indigo · ΔE 45.9
Nearest named CSS colourMidnight blue (#191970)ΔE 26.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#442E00
Analogous#003844, #0C0044
Triadic#440016, #164400
Split complementary#440C00, #384400
Tetradic#440038, #442E00, #00440C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#115EFF
Lighter +30%#0048DD
Lighter +20%#0037AA
Lighter +10%#002777
Darker −10%#000611
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001644
Less saturated −25%#08193C

Channel breakdown

R0
G22
B68
Red0 (0%)
Green22 (8.6%)
Blue68 (26.7%)
Hue220.59°
Saturation (HSL)100%
Lightness13.33%
Dominant channelBlue
Hex per channelR 00 · G 16 · B 44

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Every value on this page was computed from “hex 001644” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.