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Colour

#172C6C

  • #172C6C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#172C6C is a blue with RGB values 23, 44, 108 and HSL 225°, 65%, 26%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#172C6C#172C6C
HEX#172C6C
RGBrgb(23, 44, 108)
RGB (0–1)0.0902, 0.1725, 0.4235
RGB percentages9%, 17.3%, 42.4%
HSLhsl(225.2, 64.9%, 25.7%)
HSV / HSBhsv(225.2, 78.7%, 42.4%)
CMYK78.7%, 59.3%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,518,700
CSS custom property--colour: #172C6C;

Brightness & contrast

Relative luminance0.03066WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.02:1
Contrast with white13.02:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#E8D393

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00356Eno red cones; affects about 1% of men; ΔE 8.5 from the original
Deuteranopia#002D6Bno green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#003C47no blue cones; rare, and affects men and women equally; ΔE 40.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.02:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.2Midnight blue · ΔE 18.4Rebecca purple · ΔE 29.9Slate blue · ΔE 36.4Indigo · ΔE 37.4Royal blue · ΔE 38.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C5717
Analogous#17566C, #2D176C
Triadic#6C172C, #2C6C17
Split complementary#6C2D17, #566C17
Tetradic#6C1756, #6C5717, #176C2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6F8BE0
Lighter +30%#4569D7
Lighter +20%#294EC0
Lighter +10%#203D96
Darker −10%#0E1B42
Darker −20%#050A18
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07247C
Less saturated −25%#27345C

Channel breakdown

R23
G44
B108
Red23 (9%)
Green44 (17.3%)
Blue108 (42.4%)
Hue225.18°
Saturation (HSL)64.89%
Lightness25.69%
Dominant channelBlue
Hex per channelR 17 · G 2C · B 6C

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Every value on this page was computed from “172c6c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.