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Recognised as Colour

#1B1364

  • #1B1364
  • Blue
  • Dark
  • Nearest: Midnight blue

#1B1364 is a blue with RGB values 27, 19, 100 and HSL 246°, 68%, 23%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1B1364#1B1364
HEX#1B1364
RGBrgb(27, 19, 100)
RGB (0–1)0.1059, 0.0745, 0.3922
RGB percentages10.6%, 7.5%, 39.2%
HSLhsl(245.9, 68.1%, 23.3%)
HSV / HSBhsv(245.9, 81%, 39.2%)
CMYK73%, 81%, 0%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,774,436
CSS custom property--colour: #1B1364;

Brightness & contrast

Relative luminance0.01619WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.86:1
Contrast with white15.86:1WCAG normal text: AAA
Contrast with black1.32:1WCAG normal text: Fail
Greyscale equivalent#1B1B1B
Inverted#E4EC9B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002666no red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#001F63no green cones; the most common form, about 1% of men; ΔE 11.4 from the original
Tritanopia#002B3Bno blue cones; rare, and affects men and women equally; ΔE 49.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.86:1WCAG large text: AAA
Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 4.5Dark slateblue · ΔE 18.6Rebecca purple · ΔE 22.8Indigo · ΔE 22.9Navy · ΔE 24.9Dark blue · ΔE 29.8
Nearest named CSS colourMidnight blue (#191970)ΔE 4.51, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C6413
Analogous#133364, #441364
Triadic#641B13, #13641B
Split complementary#644413, #336413
Tetradic#641333, #5C6413, #136444

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6E62E1
Lighter +30%#4737D9
Lighter +20%#3223BA
Lighter +10%#271B8F
Darker −10%#0F0B39
Darker −20%#04030E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F0473
Less saturated −25%#272255

Channel breakdown

R27
G19
B100
Red27 (10.6%)
Green19 (7.5%)
Blue100 (39.2%)
Hue245.93°
Saturation (HSL)68.07%
Lightness23.33%
Dominant channelBlue
Hex per channelR 1B · G 13 · B 64

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Every value on this page was computed from “1b1364” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.