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Recognised as Colour

#1637A2

  • #1637A2
  • Blue
  • Dark
  • Nearest: Midnight blue

#1637A2 is a blue with RGB values 22, 55, 162 and HSL 226°, 76%, 36%. 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

#1637A2#1637A2
HEX#1637A2
RGBrgb(22, 55, 162)
RGB (0–1)0.0863, 0.2157, 0.6353
RGB percentages8.6%, 21.6%, 63.5%
HSLhsl(225.9, 76.1%, 36.1%)
HSV / HSBhsv(225.9, 86.4%, 63.5%)
CMYK86.4%, 66%, 0%, 36.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,456,034
CSS custom property--colour: #1637A2;

Brightness & contrast

Relative luminance0.05512WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.99:1
Contrast with white9.99:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#E9C85D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0049A5no red cones; affects about 1% of men; ΔE 14.3 from the original
Deuteranopia#003CA0no green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#005467no blue cones; rare, and affects men and women equally; ΔE 62.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.99:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 16.6Slate blue · ΔE 18.2Rebecca purple · ΔE 18.7Dark slateblue · ΔE 19.3Royal blue · ΔE 20.7Navy · ΔE 22.9
Nearest named CSS colourMidnight blue (#191970)ΔE 16.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A28116
Analogous#167DA2, #3B16A2
Triadic#A21637, #37A216
Split complementary#A23B16, #7DA216
Tetradic#A2167D, #A28116, #16A23B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94A9F0
Lighter +30%#6786EA
Lighter +20%#3A62E4
Lighter +10%#1C46CF
Darker −10%#102875
Darker −20%#0A1948
Darker −30%#04091B
Darker −40%#000000
More saturated +25%#002BB8
Less saturated −25%#2D438B

Channel breakdown

R22
G55
B162
Red22 (8.6%)
Green55 (21.6%)
Blue162 (63.5%)
Hue225.86°
Saturation (HSL)76.09%
Lightness36.08%
Dominant channelBlue
Hex per channelR 16 · G 37 · B A2

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Every value on this page was computed from “1637a2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.