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Recognised as Colour

#213A6C

  • #213A6C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#213A6C is a blue with RGB values 33, 58, 108 and HSL 220°, 53%, 28%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#213A6C#213A6C
HEX#213A6C
RGBrgb(33, 58, 108)
RGB (0–1)0.1294, 0.2275, 0.4235
RGB percentages12.9%, 22.7%, 42.4%
HSLhsl(220, 53.2%, 27.6%)
HSV / HSBhsv(220, 69.4%, 42.4%)
CMYK69.4%, 46.3%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,177,644
CSS custom property--colour: #213A6C;

Brightness & contrast

Relative luminance0.04432WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.13:1
Contrast with white11.13:1WCAG normal text: AAA
Contrast with black1.89:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#DEC593

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#223F6Eno red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#16386Bno green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#00454Dno blue cones; rare, and affects men and women equally; ΔE 32.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.13:1WCAG large text: AAA
Contrast with black, large text1.89:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.1Steel blue · ΔE 30.1Midnight blue · ΔE 30.5Dark slate grey · ΔE 35.3Slate grey · ΔE 36.7Dim grey · ΔE 38.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C5321
Analogous#21606C, #2E216C
Triadic#6C213A, #3A6C21
Split complementary#6C2E21, #606C21
Tetradic#6C215F, #6C5321, #216C2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#819ED8
Lighter +30%#5A80CC
Lighter +20%#3964BA
Lighter +10%#2D4F93
Darker −10%#152545
Darker −20%#09101E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F347E
Less saturated −25%#33405A

Channel breakdown

R33
G58
B108
Red33 (12.9%)
Green58 (22.7%)
Blue108 (42.4%)
Hue220°
Saturation (HSL)53.19%
Lightness27.65%
Dominant channelBlue
Hex per channelR 21 · G 3A · B 6C

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Every value on this page was computed from “213a6c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.