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Recognised as Colour

#180D54

  • #180D54
  • Blue
  • Dark
  • Nearest: Midnight blue

#180D54 is a blue with RGB values 24, 13, 84 and HSL 249°, 73%, 19%. It is a dark colour, so white text on it reaches 17.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#180D54#180D54
HEX#180D54
RGBrgb(24, 13, 84)
RGB (0–1)0.0941, 0.051, 0.3294
RGB percentages9.4%, 5.1%, 32.9%
HSLhsl(249.3, 73.2%, 19%)
HSV / HSBhsv(249.3, 84.5%, 32.9%)
CMYK71.4%, 84.5%, 0%, 67.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,576,276
CSS custom property--colour: #180D54;

Brightness & contrast

Relative luminance0.01122WCAG 2.x, 0 is black and 1 is white
Perceived brightness32.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.15:1
Contrast with white17.15:1WCAG normal text: AAA
Contrast with black1.22:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#E7F2AB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001E56no red cones; affects about 1% of men; ΔE 14.5 from the original
Deuteranopia#001953no green cones; the most common form, about 1% of men; ΔE 11.6 from the original
Tritanopia#002230no blue cones; rare, and affects men and women equally; ΔE 44.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.15:1WCAG large text: AAA
Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.1Dark slateblue · ΔE 21.1Rebecca purple · ΔE 27.7Indigo · ΔE 28.2Navy · ΔE 30.6Dark blue · ΔE 35.7
Nearest named CSS colourMidnight blue (#191970)ΔE 11.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#49540D
Analogous#0D2554, #3C0D54
Triadic#54180D, #0D5418
Split complementary#543C0D, #25540D
Tetradic#540D25, #49540D, #0D543C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#624AE3
Lighter +30%#3E22D8
Lighter +20%#311BAC
Lighter +10%#251480
Darker −10%#0B0628
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#100160
Less saturated −25%#201948

Channel breakdown

R24
G13
B84
Red24 (9.4%)
Green13 (5.1%)
Blue84 (32.9%)
Hue249.3°
Saturation (HSL)73.2%
Lightness19.02%
Dominant channelBlue
Hex per channelR 18 · G 0D · B 54

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Every value on this page was computed from “180d54” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.