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Recognised as Colour

#0B1B64

  • #0B1B64
  • Blue
  • Dark
  • Nearest: Midnight blue

#0B1B64 is a blue with RGB values 11, 27, 100 and HSL 229°, 80%, 22%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#0B1B64#0B1B64
HEX#0B1B64
RGBrgb(11, 27, 100)
RGB (0–1)0.0431, 0.1059, 0.3922
RGB percentages4.3%, 10.6%, 39.2%
HSLhsl(229.2, 80.2%, 21.8%)
HSV / HSBhsv(229.2, 89%, 39.2%)
CMYK89%, 73%, 0%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer727,908
CSS custom property--colour: #0B1B64;

Brightness & contrast

Relative luminance0.01775WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.5:1
Contrast with white15.5:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#F4E49B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002866no red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#002063no green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#002F3Dno blue cones; rare, and affects men and women equally; ΔE 45.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.5:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9Dark slateblue · ΔE 16.8Rebecca purple · ΔE 26.3Indigo · ΔE 29.2Navy · ΔE 30.7Dark blue · ΔE 35.5
Nearest named CSS colourMidnight blue (#191970)ΔE 9, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#64540B
Analogous#0B4864, #270B64
Triadic#640B1B, #1B640B
Split complementary#64270B, #48640B
Tetradic#640B48, #64540B, #0B6428

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4F6BEC
Lighter +30%#2145E7
Lighter +20%#1534C0
Lighter +10%#102792
Darker −10%#060F36
Darker −20%#010208
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00146F
Less saturated −25%#192456

Channel breakdown

R11
G27
B100
Red11 (4.3%)
Green27 (10.6%)
Blue100 (39.2%)
Hue229.21°
Saturation (HSL)80.18%
Lightness21.76%
Dominant channelBlue
Hex per channelR 0B · G 1B · B 64

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Every value on this page was computed from “0b1b64” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.