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Recognised as Colour

#213A84

  • #213A84
  • Blue
  • Dark
  • Nearest: Dark slateblue

#213A84 is a blue with RGB values 33, 58, 132 and HSL 225°, 60%, 32%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#213A84#213A84
HEX#213A84
RGBrgb(33, 58, 132)
RGB (0–1)0.1294, 0.2275, 0.5176
RGB percentages12.9%, 22.7%, 51.8%
HSLhsl(224.8, 60%, 32.4%)
HSV / HSBhsv(224.8, 75%, 51.8%)
CMYK75%, 56.1%, 0%, 48.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,177,668
CSS custom property--colour: #213A84;

Brightness & contrast

Relative luminance0.05015WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.48:1
Contrast with white10.48:1WCAG normal text: AAA
Contrast with black2:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#DEC57B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004487no red cones; affects about 1% of men; ΔE 9.1 from the original
Deuteranopia#003B83no green cones; the most common form, about 1% of men; ΔE 4.1 from the original
Tritanopia#004C59no blue cones; rare, and affects men and women equally; ΔE 45.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.48:1WCAG large text: AAA
Contrast with black, large text2:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.3Midnight blue · ΔE 18.3Rebecca purple · ΔE 25.8Slate blue · ΔE 29.1Royal blue · ΔE 30.8Medium purple · ΔE 34.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.3, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#846B21
Analogous#216B84, #3A2184
Triadic#84213A, #3A8421
Split complementary#843A21, #6B8421
Tetradic#84216B, #846B21, #21843A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8EA4E3
Lighter +30%#6582D9
Lighter +20%#3D61CE
Lighter +10%#2B4CAD
Darker −10%#17285B
Darker −20%#0D1632
Darker −30%#02040A
Darker −40%#000000
More saturated +25%#0C3099
Less saturated −25%#36446F

Channel breakdown

R33
G58
B132
Red33 (12.9%)
Green58 (22.7%)
Blue132 (51.8%)
Hue224.85°
Saturation (HSL)60%
Lightness32.35%
Dominant channelBlue
Hex per channelR 21 · G 3A · B 84

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Every value on this page was computed from “213a84” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.