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Recognised as Colour

#163F63

  • #163F63
  • Blue
  • Dark
  • Nearest: Dark slate grey

#163F63 is a blue with RGB values 22, 63, 99 and HSL 208°, 64%, 24%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#163F63#163F63
HEX#163F63
RGBrgb(22, 63, 99)
RGB (0–1)0.0863, 0.2471, 0.3882
RGB percentages8.6%, 24.7%, 38.8%
HSLhsl(208.1, 63.6%, 23.7%)
HSV / HSBhsv(208.1, 77.8%, 38.8%)
CMYK77.8%, 36.4%, 0%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,458,019
CSS custom property--colour: #163F63;

Brightness & contrast

Relative luminance0.04626WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.91:1
Contrast with white10.91:1WCAG normal text: AAA
Contrast with black1.93:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#E9C09C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F4165no red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#243962no green cones; the most common form, about 1% of men; ΔE 6.7 from the original
Tritanopia#00484Cno blue cones; rare, and affects men and women equally; ΔE 24.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.91:1WCAG large text: AAA
Contrast with black, large text1.93:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 25Steel blue · ΔE 27.9Slate grey · ΔE 31Dim grey · ΔE 31.5Dark slateblue · ΔE 31.8Light slate grey · ΔE 33.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 24.97, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#633A16
Analogous#166361, #161863
Triadic#63163F, #3F6316
Split complementary#631618, #636116
Tetradic#611663, #633A16, #186316

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68A6DD
Lighter +30%#3E8ED4
Lighter +20%#2974B6
Lighter +10%#1F5A8D
Darker −10%#0D2439
Darker −20%#030A10
Darker −30%#000000
Darker −40%#000000
More saturated +25%#074072
Less saturated −25%#253E54

Channel breakdown

R22
G63
B99
Red22 (8.6%)
Green63 (24.7%)
Blue99 (38.8%)
Hue208.05°
Saturation (HSL)63.64%
Lightness23.73%
Dominant channelBlue
Hex per channelR 16 · G 3F · B 63

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Every value on this page was computed from “163f63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.