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Recognised as Colour

#1740A2

  • #1740A2
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1740A2 is a blue with RGB values 23, 64, 162 and HSL 222°, 75%, 36%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1740A2#1740A2
HEX#1740A2
RGBrgb(23, 64, 162)
RGB (0–1)0.0902, 0.251, 0.6353
RGB percentages9%, 25.1%, 63.5%
HSLhsl(222.3, 75.1%, 36.3%)
HSV / HSBhsv(222.3, 85.8%, 63.5%)
CMYK85.8%, 60.5%, 0%, 36.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,523,874
CSS custom property--colour: #1740A2;

Brightness & contrast

Relative luminance0.06458WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.16:1
Contrast with white9.16:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#E8BF5D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004EA5no red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#0042A0no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#00596Ano blue cones; rare, and affects men and women equally; ΔE 57.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.16:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.7Midnight blue · ΔE 17.7Slate blue · ΔE 18.6Royal blue · ΔE 19.3Rebecca purple · ΔE 20.6Medium purple · ΔE 28
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.69, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A27917
Analogous#1785A2, #3417A2
Triadic#A21740, #40A217
Split complementary#A23417, #85A217
Tetradic#A21785, #A27917, #17A234

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#95B0F0
Lighter +30%#688FEA
Lighter +20%#3C6DE3
Lighter +10%#1D52CF
Darker −10%#112E75
Darker −20%#0A1D49
Darker −30%#040B1C
Darker −40%#000000
More saturated +25%#0037B9
Less saturated −25%#2E498B

Channel breakdown

R23
G64
B162
Red23 (9%)
Green64 (25.1%)
Blue162 (63.5%)
Hue222.3°
Saturation (HSL)75.14%
Lightness36.27%
Dominant channelBlue
Hex per channelR 17 · G 40 · B A2

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Every value on this page was computed from “1740a2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.