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Recognised as Colour

#0A166D

  • #0A166D
  • Blue
  • Dark
  • Nearest: Midnight blue

#0A166D is a blue with RGB values 10, 22, 109 and HSL 233°, 83%, 23%. It is a dark colour, so white text on it reaches 15.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#0A166D#0A166D
HEX#0A166D
RGBrgb(10, 22, 109)
RGB (0–1)0.0392, 0.0863, 0.4275
RGB percentages3.9%, 8.6%, 42.7%
HSLhsl(232.7, 83.2%, 23.3%)
HSV / HSBhsv(232.7, 90.8%, 42.7%)
CMYK90.8%, 79.8%, 0%, 57.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer661,101
CSS custom property--colour: #0A166D;

Brightness & contrast

Relative luminance0.01742WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.57:1
Contrast with white15.57:1WCAG normal text: AAA
Contrast with black1.35:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#F5E992

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00296Fno red cones; affects about 1% of men; ΔE 15.5 from the original
Deuteranopia#001F6Bno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#003040no blue cones; rare, and affects men and women equally; ΔE 53.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.57:1WCAG large text: AAA
Contrast with black, large text1.35:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 2.1Dark slateblue · ΔE 19.5Navy · ΔE 21.5Indigo · ΔE 21.5Rebecca purple · ΔE 22.3Dark blue · ΔE 26.3
Nearest named CSS colourMidnight blue (#191970)ΔE 2.09, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6D610A
Analogous#0A476D, #300A6D
Triadic#6D0A16, #166D0A
Split complementary#6D300A, #476D0A
Tetradic#6D0A47, #6D610A, #0A6D30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5467EF
Lighter +30%#253DEB
Lighter +20%#1329CA
Lighter +10%#0E1F9C
Darker −10%#060D3E
Darker −20%#010310
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000E77
Less saturated −25%#19215E

Channel breakdown

R10
G22
B109
Red10 (3.9%)
Green22 (8.6%)
Blue109 (42.7%)
Hue232.73°
Saturation (HSL)83.19%
Lightness23.33%
Dominant channelBlue
Hex per channelR 0A · G 16 · B 6D

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Every value on this page was computed from “0a166d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.