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Colour

#184CAA

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

#184CAA is a blue with RGB values 24, 76, 170 and HSL 219°, 75%, 38%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#184CAA#184CAA
HEX#184CAA
RGBrgb(24, 76, 170)
RGB (0–1)0.0941, 0.298, 0.6667
RGB percentages9.4%, 29.8%, 66.7%
HSLhsl(218.6, 75.3%, 38%)
HSV / HSBhsv(218.6, 85.9%, 66.7%)
CMYK85.9%, 55.3%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,592,490
CSS custom property--colour: #184CAA;

Brightness & contrast

Relative luminance0.08265WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.92:1
Contrast with white7.92:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#E7B355

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058ADno red cones; affects about 1% of men; ΔE 9.4 from the original
Deuteranopia#004BA8no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#006373no blue cones; rare, and affects men and women equally; ΔE 54.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.92:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.8Royal blue · ΔE 17.9Slate blue · ΔE 19.6Midnight blue · ΔE 22.7Rebecca purple · ΔE 24.3Medium purple · ΔE 27
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA7618
Analogous#1895AA, #2D18AA
Triadic#AA184C, #4CAA18
Split complementary#AA2D18, #95AA18
Tetradic#AA1895, #AA7618, #18AA2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DBBF1
Lighter +30%#709CEB
Lighter +20%#437DE5
Lighter +10%#1E60D7
Darker −10%#12387D
Darker −20%#0B2451
Darker −30%#051024
Darker −40%#000000
More saturated +25%#0045C2
Less saturated −25%#305392

Channel breakdown

R24
G76
B170
Red24 (9.4%)
Green76 (29.8%)
Blue170 (66.7%)
Hue218.63°
Saturation (HSL)75.26%
Lightness38.04%
Dominant channelBlue
Hex per channelR 18 · G 4C · B AA

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