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Recognised as Colour

#17104E

  • #17104E
  • Blue
  • Dark
  • Nearest: Midnight blue

#17104E is a blue with RGB values 23, 16, 78 and HSL 247°, 66%, 18%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#17104E#17104E
HEX#17104E
RGBrgb(23, 16, 78)
RGB (0–1)0.0902, 0.0627, 0.3059
RGB percentages9%, 6.3%, 30.6%
HSLhsl(246.8, 66%, 18.4%)
HSV / HSBhsv(246.8, 79.5%, 30.6%)
CMYK70.5%, 79.5%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,511,502
CSS custom property--colour: #17104E;

Brightness & contrast

Relative luminance0.01103WCAG 2.x, 0 is black and 1 is white
Perceived brightness31.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.21:1
Contrast with white17.21:1WCAG normal text: AAA
Contrast with black1.22:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#E8EFB1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001D50no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#00194Dno green cones; the most common form, about 1% of men; ΔE 10 from the original
Tritanopia#00212Dno blue cones; rare, and affects men and women equally; ΔE 40.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.21:1WCAG large text: AAA
Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 15.8Dark slateblue · ΔE 21.7Rebecca purple · ΔE 31.1Indigo · ΔE 33.4Navy · ΔE 36.2Purple · ΔE 39.6
Nearest named CSS colourMidnight blue (#191970)ΔE 15.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#474E10
Analogous#10284E, #36104E
Triadic#4E1710, #104E17
Split complementary#4E3610, #284E10
Tetradic#4E1028, #474E10, #104E36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5F4FDB
Lighter +30%#3C2ACD
Lighter +20%#3021A3
Lighter +10%#231978
Darker −10%#0B0724
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0E045A
Less saturated −25%#201C42

Channel breakdown

R23
G16
B78
Red23 (9%)
Green16 (6.3%)
Blue78 (30.6%)
Hue246.77°
Saturation (HSL)65.96%
Lightness18.43%
Dominant channelBlue
Hex per channelR 17 · G 10 · B 4E

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Every value on this page was computed from “17104e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.