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Recognised as Colour

#22184B

  • #22184B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#22184B is a blue with RGB values 34, 24, 75 and HSL 252°, 52%, 19%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#22184B#22184B
HEX#22184B
RGBrgb(34, 24, 75)
RGB (0–1)0.1333, 0.0941, 0.2941
RGB percentages13.3%, 9.4%, 29.4%
HSLhsl(251.8, 51.5%, 19.4%)
HSV / HSBhsv(251.8, 68%, 29.4%)
CMYK54.7%, 68%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,234,443
CSS custom property--colour: #22184B;

Brightness & contrast

Relative luminance0.01501WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.15:1
Contrast with white16.15:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#DDE7B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00224Dno red cones; affects about 1% of men; ΔE 12.5 from the original
Deuteranopia#001F4Ano green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#14242Eno blue cones; rare, and affects men and women equally; ΔE 31.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.15:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.5Midnight blue · ΔE 22.8Rebecca purple · ΔE 34.8Black · ΔE 38.5Indigo · ΔE 39.8Purple · ΔE 42.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#414B18
Analogous#18284B, #3C184B
Triadic#4B2218, #184B22
Split complementary#4B3C18, #284B18
Tetradic#4B1827, #414B18, #184B3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7762CD
Lighter +30%#573DBF
Lighter +20%#453198
Lighter +10%#342472
Darker −10%#100C24
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1A0C57
Less saturated −25%#2A243F

Channel breakdown

R34
G24
B75
Red34 (13.3%)
Green24 (9.4%)
Blue75 (29.4%)
Hue251.76°
Saturation (HSL)51.52%
Lightness19.41%
Dominant channelBlue
Hex per channelR 22 · G 18 · B 4B

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Every value on this page was computed from “22184b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.