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Recognised as Colour

#2A2164

  • #2A2164
  • Blue
  • Dark
  • Nearest: Midnight blue

#2A2164 is a blue with RGB values 42, 33, 100 and HSL 248°, 50%, 26%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#2A2164#2A2164
HEX#2A2164
RGBrgb(42, 33, 100)
RGB (0–1)0.1647, 0.1294, 0.3922
RGB percentages16.5%, 12.9%, 39.2%
HSLhsl(248.1, 50.4%, 26.1%)
HSV / HSBhsv(248.1, 67%, 39.2%)
CMYK58%, 67%, 0%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,761,060
CSS custom property--colour: #2A2164;

Brightness & contrast

Relative luminance0.025WCAG 2.x, 0 is black and 1 is white
Perceived brightness48 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14:1
Contrast with white14:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#D5DE9B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002E66no red cones; affects about 1% of men; ΔE 14.4 from the original
Deuteranopia#002A63no green cones; the most common form, about 1% of men; ΔE 12.7 from the original
Tritanopia#10313Fno blue cones; rare, and affects men and women equally; ΔE 40.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 13.4Dark slateblue · ΔE 13.5Rebecca purple · ΔE 25.1Indigo · ΔE 30.9Navy · ΔE 35.2Slate blue · ΔE 35.5
Nearest named CSS colourMidnight blue (#191970)ΔE 13.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B6421
Analogous#213964, #4C2164
Triadic#642A21, #21642A
Split complementary#644C21, #396421
Tetradic#642139, #5B6421, #21644C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#897DD4
Lighter +30%#6657C7
Lighter +20%#4A3AB1
Lighter +10%#3A2E8A
Darker −10%#1A143E
Darker −20%#0A0817
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1E1075
Less saturated −25%#363253

Channel breakdown

R42
G33
B100
Red42 (16.5%)
Green33 (12.9%)
Blue100 (39.2%)
Hue248.06°
Saturation (HSL)50.38%
Lightness26.08%
Dominant channelBlue
Hex per channelR 2A · G 21 · B 64

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Every value on this page was computed from “2a2164” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.