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Recognised as Colour

#181C32

  • #181C32
  • Blue
  • Dark
  • Nearest: Black

#181C32 is a blue with RGB values 24, 28, 50 and HSL 231°, 35%, 15%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181C32#181C32
HEX#181C32
RGBrgb(24, 28, 50)
RGB (0–1)0.0941, 0.1098, 0.1961
RGB percentages9.4%, 11%, 19.6%
HSLhsl(230.8, 35.1%, 14.5%)
HSV / HSBhsv(230.8, 52%, 19.6%)
CMYK52%, 44%, 0%, 80.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,580,082
CSS custom property--colour: #181C32;

Brightness & contrast

Relative luminance0.01255WCAG 2.x, 0 is black and 1 is white
Perceived brightness30.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.79:1
Contrast with white16.79:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E7E3CD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#141F33no red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#121C31no green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#0F2024no blue cones; rare, and affects men and women equally; ΔE 15.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.79:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 19.5Dark slate grey · ΔE 28.9Dim grey · ΔE 37.1Dark slateblue · ΔE 39.3Slate grey · ΔE 42.8Midnight blue · ΔE 43.6
Nearest named CSS colourBlack (#000000)ΔE 19.47, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#322E18
Analogous#182932, #211832
Triadic#32181C, #1C3218
Split complementary#322118, #293218
Tetradic#321829, #322E18, #183221

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#626FB4
Lighter +30%#4A5699
Lighter +20%#394377
Lighter +10%#292F54
Darker −10%#070910
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F163B
Less saturated −25%#212229

Channel breakdown

R24
G28
B50
Red24 (9.4%)
Green28 (11%)
Blue50 (19.6%)
Hue230.77°
Saturation (HSL)35.14%
Lightness14.51%
Dominant channelBlue
Hex per channelR 18 · G 1C · B 32

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Every value on this page was computed from “181c32” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.