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Recognised as Colour

#171A46

  • #171A46
  • Blue
  • Dark
  • Nearest: Dark slateblue

#171A46 is a blue with RGB values 23, 26, 70 and HSL 236°, 51%, 18%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#171A46#171A46
HEX#171A46
RGBrgb(23, 26, 70)
RGB (0–1)0.0902, 0.102, 0.2745
RGB percentages9%, 10.2%, 27.5%
HSLhsl(236.2, 50.5%, 18.2%)
HSV / HSBhsv(236.2, 67.1%, 27.5%)
CMYK67.1%, 62.9%, 0%, 72.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,514,054
CSS custom property--colour: #171A46;

Brightness & contrast

Relative luminance0.01363WCAG 2.x, 0 is black and 1 is white
Perceived brightness33.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.5:1
Contrast with white16.5:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E8E5B9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002147no red cones; affects about 1% of men; ΔE 8.9 from the original
Deuteranopia#001D45no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#00242Dno blue cones; rare, and affects men and women equally; ΔE 29.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.5:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.3Midnight blue · ΔE 27.8Black · ΔE 33.8Rebecca purple · ΔE 40.2Dark slate grey · ΔE 40.8Steel blue · ΔE 45
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#464317
Analogous#173246, #2C1746
Triadic#46171A, #1A4617
Split complementary#462C17, #324617
Tetradic#461732, #464317, #17462C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5F66CA
Lighter +30%#3D45B9
Lighter +20%#303793
Lighter +10%#24286C
Darker −10%#0A0C20
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B1052
Less saturated −25%#23243A

Channel breakdown

R23
G26
B70
Red23 (9%)
Green26 (10.2%)
Blue70 (27.5%)
Hue236.17°
Saturation (HSL)50.54%
Lightness18.24%
Dominant channelBlue
Hex per channelR 17 · G 1A · B 46

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Every value on this page was computed from “171a46” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.