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Recognised as Colour

#172A96

  • #172A96
  • Blue
  • Dark
  • Nearest: Midnight blue

#172A96 is a blue with RGB values 23, 42, 150 and HSL 231°, 73%, 34%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#172A96#172A96
HEX#172A96
RGBrgb(23, 42, 150)
RGB (0–1)0.0902, 0.1647, 0.5882
RGB percentages9%, 16.5%, 58.8%
HSLhsl(231, 73.4%, 33.9%)
HSV / HSBhsv(231, 84.7%, 58.8%)
CMYK84.7%, 72%, 0%, 41.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,518,230
CSS custom property--colour: #172A96;

Brightness & contrast

Relative luminance0.0404WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.61:1
Contrast with white11.61:1WCAG normal text: AAA
Contrast with black1.81:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#E8D569

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003F99no red cones; affects about 1% of men; ΔE 16.6 from the original
Deuteranopia#003294no green cones; the most common form, about 1% of men; ΔE 8.1 from the original
Tritanopia#00495Dno blue cones; rare, and affects men and women equally; ΔE 63.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.61:1WCAG large text: AAA
Contrast with black, large text1.81:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 13.8Navy · ΔE 17.2Rebecca purple · ΔE 18Indigo · ΔE 18.6Dark blue · ΔE 19.8Dark slateblue · ΔE 21.5
Nearest named CSS colourMidnight blue (#191970)ΔE 13.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#968317
Analogous#176A96, #441796
Triadic#96172A, #2A9617
Split complementary#964317, #6A9617
Tetradic#961769, #968317, #179643

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8C9AED
Lighter +30%#5F74E7
Lighter +20%#334DE0
Lighter +10%#1E36C2
Darker −10%#101E6A
Darker −20%#09113E
Darker −30%#030511
Darker −40%#000000
More saturated +25%#011BAC
Less saturated −25%#2D3980

Channel breakdown

R23
G42
B150
Red23 (9%)
Green42 (16.5%)
Blue150 (58.8%)
Hue231.02°
Saturation (HSL)73.41%
Lightness33.92%
Dominant channelBlue
Hex per channelR 17 · G 2A · B 96

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Every value on this page was computed from “172a96” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.