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Recognised as Colour

#1B166F

  • #1B166F
  • Blue
  • Dark
  • Nearest: Midnight blue

#1B166F is a blue with RGB values 27, 22, 111 and HSL 243°, 67%, 26%. It is a dark colour, so white text on it reaches 15.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1B166F#1B166F
HEX#1B166F
RGBrgb(27, 22, 111)
RGB (0–1)0.1059, 0.0863, 0.4353
RGB percentages10.6%, 8.6%, 43.5%
HSLhsl(243.4, 66.9%, 26.1%)
HSV / HSBhsv(243.4, 80.2%, 43.5%)
CMYK75.7%, 80.2%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,775,215
CSS custom property--colour: #1B166F;

Brightness & contrast

Relative luminance0.01955WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.1:1
Contrast with white15.1:1WCAG normal text: AAA
Contrast with black1.39:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E4E990

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002A72no red cones; affects about 1% of men; ΔE 15.9 from the original
Deuteranopia#00226Dno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#003042no blue cones; rare, and affects men and women equally; ΔE 53.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.1:1WCAG large text: AAA
Contrast with black, large text1.39:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 1.8Dark slateblue · ΔE 18.9Indigo · ΔE 19.4Rebecca purple · ΔE 20.3Navy · ΔE 20.6Dark blue · ΔE 25.4
Nearest named CSS colourMidnight blue (#191970)ΔE 1.79, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A6F16
Analogous#163D6F, #48166F
Triadic#6F1B16, #166F1B
Split complementary#6F4816, #3D6F16
Tetradic#6F163D, #6A6F16, #166F48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#756FE2
Lighter +30%#4C44DA
Lighter +20%#3027C4
Lighter +10%#251E9A
Darker −10%#110E44
Darker −20%#06051A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C0580
Less saturated −25%#2A275E

Channel breakdown

R27
G22
B111
Red27 (10.6%)
Green22 (8.6%)
Blue111 (43.5%)
Hue243.37°
Saturation (HSL)66.92%
Lightness26.08%
Dominant channelBlue
Hex per channelR 1B · G 16 · B 6F

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Every value on this page was computed from “1b166f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.