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Colour

#184CA5

  • #184CA5
  • Blue
  • Dark
  • Nearest: Dark slateblue

#184CA5 is a blue with RGB values 24, 76, 165 and HSL 218°, 75%, 37%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#184CA5#184CA5
HEX#184CA5
RGBrgb(24, 76, 165)
RGB (0–1)0.0941, 0.298, 0.6471
RGB percentages9.4%, 29.8%, 64.7%
HSLhsl(217.9, 74.6%, 37.1%)
HSV / HSBhsv(217.9, 85.5%, 64.7%)
CMYK85.5%, 53.9%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,592,485
CSS custom property--colour: #184CA5;

Brightness & contrast

Relative luminance0.0808WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.03:1
Contrast with white8.03:1WCAG normal text: AAA
Contrast with black2.62:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#E7B35A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0157A8no red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#004AA3no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#006271no blue cones; rare, and affects men and women equally; ΔE 52.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.03:1WCAG large text: AAA
Contrast with black, large text2.62:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.7Royal blue · ΔE 20.4Slate blue · ΔE 21.9Midnight blue · ΔE 23.1Rebecca purple · ΔE 25.6Medium purple · ΔE 28.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A57118
Analogous#1893A5, #2A18A5
Triadic#A5184C, #4CA518
Split complementary#A52A18, #93A518
Tetradic#A51893, #A57118, #18A52A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99B9F0
Lighter +30%#6C9BEA
Lighter +20%#407CE3
Lighter +10%#1E61D2
Darker −10%#123778
Darker −20%#0B234C
Darker −30%#050E1F
Darker −40%#000000
More saturated +25%#0046BD
Less saturated −25%#30528D

Channel breakdown

R24
G76
B165
Red24 (9.4%)
Green76 (29.8%)
Blue165 (64.7%)
Hue217.87°
Saturation (HSL)74.6%
Lightness37.06%
Dominant channelBlue
Hex per channelR 18 · G 4C · B A5

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Every value on this page was computed from “184ca5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.