Nerdulator> put something in

Recognised as Colour

#181D67

  • #181D67
  • Blue
  • Dark
  • Nearest: Midnight blue

#181D67 is a blue with RGB values 24, 29, 103 and HSL 236°, 62%, 25%. It is a dark colour, so white text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#181D67#181D67
HEX#181D67
RGBrgb(24, 29, 103)
RGB (0–1)0.0941, 0.1137, 0.4039
RGB percentages9.4%, 11.4%, 40.4%
HSLhsl(236.2, 62.2%, 24.9%)
HSV / HSBhsv(236.2, 76.7%, 40.4%)
CMYK76.7%, 71.8%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,580,391
CSS custom property--colour: #181D67;

Brightness & contrast

Relative luminance0.02052WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.89:1
Contrast with white14.89:1WCAG normal text: AAA
Contrast with black1.41:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#E7E298

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002B69no red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#002466no green cones; the most common form, about 1% of men; ΔE 8 from the original
Tritanopia#00313Fno blue cones; rare, and affects men and women equally; ΔE 46.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.89:1WCAG large text: AAA
Contrast with black, large text1.41:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.3Dark slateblue · ΔE 15.2Rebecca purple · ΔE 24.5Indigo · ΔE 28.1Navy · ΔE 30.3Slate blue · ΔE 34.3
Nearest named CSS colourMidnight blue (#191970)ΔE 8.35, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#676218
Analogous#184567, #3A1867
Triadic#67181D, #1D6718
Split complementary#673A18, #456718
Tetradic#671845, #676218, #18673A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6E75DD
Lighter +30%#444ED4
Lighter +20%#2B34BA
Lighter +10%#222990
Darker −10%#0E113E
Darker −20%#050614
Darker −30%#000000
Darker −40%#000000
More saturated +25%#080F77
Less saturated −25%#282B57

Channel breakdown

R24
G29
B103
Red24 (9.4%)
Green29 (11.4%)
Blue103 (40.4%)
Hue236.2°
Saturation (HSL)62.2%
Lightness24.9%
Dominant channelBlue
Hex per channelR 18 · G 1D · B 67

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “181d67” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.