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Recognised as Colour

#11173C

  • #11173C
  • Blue
  • Dark
  • Nearest: Black

#11173C is a blue with RGB values 17, 23, 60 and HSL 232°, 56%, 15%. It is a dark colour, so white text on it reaches 17.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#11173C#11173C
HEX#11173C
RGBrgb(17, 23, 60)
RGB (0–1)0.0667, 0.0902, 0.2353
RGB percentages6.7%, 9%, 23.5%
HSLhsl(231.6, 55.8%, 15.1%)
HSV / HSBhsv(231.6, 71.7%, 23.5%)
CMYK71.7%, 61.7%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,120,060
CSS custom property--colour: #11173C;

Brightness & contrast

Relative luminance0.01058WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.33:1
Contrast with white17.33:1WCAG normal text: AAA
Contrast with black1.21:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#EEE8C3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#021C3Dno red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#00193Bno green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#002026no blue cones; rare, and affects men and women equally; ΔE 26.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.33:1WCAG large text: AAA
Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Black · ΔE 28.9Dark slateblue · ΔE 31.2Midnight blue · ΔE 32.7Dark slate grey · ΔE 38.1Dim grey · ΔE 44.3Rebecca purple · ΔE 45.2
Nearest named CSS colourBlack (#000000)ΔE 28.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C3611
Analogous#112D3C, #20113C
Triadic#3C1117, #173C11
Split complementary#3C2011, #2D3C11
Tetradic#3C112D, #3C3611, #113C20

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4D5ECC
Lighter +30%#3345B3
Lighter +20%#28358B
Lighter +10%#1C2664
Darker −10%#060814
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#071046
Less saturated −25%#1B1E32

Channel breakdown

R17
G23
B60
Red17 (6.7%)
Green23 (9%)
Blue60 (23.5%)
Hue231.63°
Saturation (HSL)55.84%
Lightness15.1%
Dominant channelBlue
Hex per channelR 11 · G 17 · B 3C

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Every value on this page was computed from “11173c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.