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Recognised as Colour

#181CA2

  • #181CA2
  • Blue
  • Dark
  • Nearest: Dark blue

#181CA2 is a blue with RGB values 24, 28, 162 and HSL 238°, 74%, 36%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#181CA2#181CA2
HEX#181CA2
RGBrgb(24, 28, 162)
RGB (0–1)0.0941, 0.1098, 0.6353
RGB percentages9.4%, 11%, 63.5%
HSLhsl(238.3, 74.2%, 36.5%)
HSV / HSBhsv(238.3, 85.2%, 63.5%)
CMYK85.2%, 82.7%, 0%, 36.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,580,194
CSS custom property--colour: #181CA2;

Brightness & contrast

Relative luminance0.03633WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.16:1
Contrast with white12.16:1WCAG normal text: AAA
Contrast with black1.73:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#E7E35D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003DA6no red cones; affects about 1% of men; ΔE 23.1 from the original
Deuteranopia#002EA0no green cones; the most common form, about 1% of men; ΔE 13.7 from the original
Tritanopia#004760no blue cones; rare, and affects men and women equally; ΔE 75.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.16:1WCAG large text: AAA
Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark blue · ΔE 8.5Navy · ΔE 10.9Indigo · ΔE 17.5Rebecca purple · ΔE 25.6Midnight blue · ΔE 26.5Slate blue · ΔE 28.3
Nearest named CSS colourDark blue (#00008B)ΔE 8.49, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A29E18
Analogous#1861A2, #5918A2
Triadic#A2181C, #1CA218
Split complementary#A25918, #61A218
Tetradic#A21861, #A29E18, #18A259

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9699F0
Lighter +30%#6A6EE9
Lighter +20%#3E42E2
Lighter +10%#1F24CE
Darker −10%#111476
Darker −20%#0B0D49
Darker −30%#04051D
Darker −40%#000000
More saturated +25%#0106B9
Less saturated −25%#2F328B

Channel breakdown

R24
G28
B162
Red24 (9.4%)
Green28 (11%)
Blue162 (63.5%)
Hue238.26°
Saturation (HSL)74.19%
Lightness36.47%
Dominant channelBlue
Hex per channelR 18 · G 1C · B A2

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Every value on this page was computed from “181ca2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.