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Recognised as Colour

#001664

  • #001664
  • Blue
  • Dark
  • Nearest: Midnight blue

#001664 is a blue with RGB values 0, 22, 100 and HSL 227°, 100%, 20%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001664#001664
HEX#001664
RGBrgb(0, 22, 100)
RGB (0–1)0, 0.0863, 0.3922
RGB percentages0%, 8.6%, 39.2%
HSLhsl(226.8, 100%, 19.6%)
HSV / HSBhsv(226.8, 100%, 39.2%)
CMYK100%, 78%, 0%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,732
CSS custom property--colour: #001664;

Brightness & contrast

Relative luminance0.01494WCAG 2.x, 0 is black and 1 is white
Perceived brightness37.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.17:1
Contrast with white16.17:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#171717
Inverted#FFE99B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002666no red cones; affects about 1% of men; ΔE 13.3 from the original
Deuteranopia#001C63no green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#002D3Bno blue cones; rare, and affects men and women equally; ΔE 49.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text16.17:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 6Dark slateblue · ΔE 19Rebecca purple · ΔE 25.6Indigo · ΔE 26.4Navy · ΔE 26.8Dark blue · ΔE 31.7
Nearest named CSS colourMidnight blue (#191970)ΔE 6.03, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#644E00
Analogous#004864, #1C0064
Triadic#640016, #166400
Split complementary#641C00, #486400
Tetradic#640048, #644E00, #00641C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#315EFF
Lighter +30%#0038FD
Lighter +20%#002CCA
Lighter +10%#002197
Darker −10%#000B31
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001664
Less saturated −25%#0C1D58

Channel breakdown

R0
G22
B100
Red0 (0%)
Green22 (8.6%)
Blue100 (39.2%)
Hue226.8°
Saturation (HSL)100%
Lightness19.61%
Dominant channelBlue
Hex per channelR 00 · G 16 · B 64

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Every value on this page was computed from “hex 001664” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.