Colour

#213C71

#213C71
Blue
Dark
Nearest: Dark slateblue

#213C71 is a blue with RGB values 33, 60, 113 and HSL 220°, 55%, 29%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#213C71#213C71

HEX#213C71

RGBrgb(33, 60, 113)

RGB (0–1)0.1294, 0.2353, 0.4431

RGB percentages12.9%, 23.5%, 44.3%

HSLhsl(219.8, 54.8%, 28.6%)

HSV / HSBhsv(219.8, 70.8%, 44.3%)

CMYK70.8%, 46.9%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,178,161

CSS custom property--colour: #213C71;

Brightness & contrast

Relative luminance0.04747WCAG 2.x, 0 is black and 1 is white

Perceived brightness62.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.77:1

Contrast with white10.77:1WCAG normal text: AAA

Contrast with black1.95:1WCAG normal text: Fail

Greyscale equivalent#3A3A3A

Inverted#DEC38E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#224173no red cones; affects about 1% of men; ΔE 3.4 from the original

Deuteranopia#143A70no green cones; the most common form, about 1% of men; ΔE 2.1 from the original

Tritanopia#004851no blue cones; rare, and affects men and women equally; ΔE 33.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text10.77:1WCAG large text: AAA

Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.6 Midnight blue · ΔE 29.5 Steel blue · ΔE 29.6 Dark slate grey · ΔE 36.8 Rebecca purple · ΔE 37.1 Slate grey · ΔE 37.1

Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.56, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#715621

Analogous#216471, #2E2171

Triadic#71213C, #3C7121

Split complementary#712E21, #647121

Tetradic#712164, #715621, #21712E

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#83A1DB

Lighter +30%#5C83CF

Lighter +20%#3866C0

Lighter +10%#2D5198

Darker −10%#15274A

Darker −20%#0A1222

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0F3683

Less saturated −25%#33425F

Channel breakdown

R33

G60

B113

Red33 (12.9%)

Green60 (23.5%)

Blue113 (44.3%)

Hue219.75°

Saturation (HSL)54.79%

Lightness28.63%

Dominant channelBlue

Hex per channelR 21 · G 3C · B 71

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#213C71

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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