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Recognised as Colour

#170C47

  • #170C47
  • Blue
  • Dark
  • Nearest: Midnight blue

#170C47 is a blue with RGB values 23, 12, 71 and HSL 251°, 71%, 16%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#170C47#170C47
HEX#170C47
RGBrgb(23, 12, 71)
RGB (0–1)0.0902, 0.0471, 0.2784
RGB percentages9%, 4.7%, 27.8%
HSLhsl(251.2, 71.1%, 16.3%)
HSV / HSBhsv(251.2, 83.1%, 27.8%)
CMYK67.6%, 83.1%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,510,471
CSS custom property--colour: #170C47;

Brightness & contrast

Relative luminance0.009WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.8:1
Contrast with white17.8:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#E8F3B8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001A49no red cones; affects about 1% of men; ΔE 13 from the original
Deuteranopia#001646no green cones; the most common form, about 1% of men; ΔE 11 from the original
Tritanopia#001D29no blue cones; rare, and affects men and women equally; ΔE 38.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.8:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 18.2Dark slateblue · ΔE 23.9Rebecca purple · ΔE 33.1Indigo · ΔE 35Navy · ΔE 38Purple · ΔE 40.5
Nearest named CSS colourMidnight blue (#191970)ΔE 18.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C470C
Analogous#0C1E47, #350C47
Triadic#47170C, #0C4717
Split complementary#47350C, #1E470C
Tetradic#470C1E, #3C470C, #0C4735

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5E40DF
Lighter +30%#4122CA
Lighter +20%#331B9E
Lighter +10%#251373
Darker −10%#09051B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#100251
Less saturated −25%#1E163D

Channel breakdown

R23
G12
B71
Red23 (9%)
Green12 (4.7%)
Blue71 (27.8%)
Hue251.19°
Saturation (HSL)71.08%
Lightness16.27%
Dominant channelBlue
Hex per channelR 17 · G 0C · B 47

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Every value on this page was computed from “170c47” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.