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Recognised as Colour

#16399D

  • #16399D
  • Blue
  • Dark
  • Nearest: Midnight blue

#16399D is a blue with RGB values 22, 57, 157 and HSL 224°, 75%, 35%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#16399D#16399D
HEX#16399D
RGBrgb(22, 57, 157)
RGB (0–1)0.0863, 0.2235, 0.6157
RGB percentages8.6%, 22.4%, 61.6%
HSLhsl(224.4, 75.4%, 35.1%)
HSV / HSBhsv(224.4, 86%, 61.6%)
CMYK86%, 63.7%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,456,541
CSS custom property--colour: #16399D;

Brightness & contrast

Relative luminance0.05531WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.97:1
Contrast with white9.97:1WCAG normal text: AAA
Contrast with black2.11:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#E9C662

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0049A0no red cones; affects about 1% of men; ΔE 12.8 from the original
Deuteranopia#003C9Bno green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#005365no blue cones; rare, and affects men and women equally; ΔE 58.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.97:1WCAG large text: AAA
Contrast with black, large text2.11:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 15.3Dark slateblue · ΔE 15.7Rebecca purple · ΔE 19.1Slate blue · ΔE 19.1Royal blue · ΔE 21.1Indigo · ΔE 25.7
Nearest named CSS colourMidnight blue (#191970)ΔE 15.27, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9D7A16
Analogous#167C9D, #37169D
Triadic#9D1639, #399D16
Split complementary#9D3716, #7C9D16
Tetradic#9D167C, #9D7A16, #169D37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90A8EF
Lighter +30%#6386E9
Lighter +20%#3663E3
Lighter +10%#1C49CA
Darker −10%#102970
Darker −20%#091944
Darker −30%#030817
Darker −40%#000000
More saturated +25%#002EB3
Less saturated −25%#2C4487

Channel breakdown

R22
G57
B157
Red22 (8.6%)
Green57 (22.4%)
Blue157 (61.6%)
Hue224.44°
Saturation (HSL)75.42%
Lightness35.1%
Dominant channelBlue
Hex per channelR 16 · G 39 · B 9D

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Every value on this page was computed from “16399d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.