Colour

#213DD8

#213DD8
Blue
Dark
Nearest: Medium slateblue

#213DD8 is a blue with RGB values 33, 61, 216 and HSL 231°, 73%, 49%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#213DD8#213DD8

HEX#213DD8

RGBrgb(33, 61, 216)

RGB (0–1)0.1294, 0.2392, 0.8471

RGB percentages12.9%, 23.9%, 84.7%

HSLhsl(230.8, 73.5%, 48.8%)

HSV / HSBhsv(230.8, 84.7%, 84.7%)

CMYK84.7%, 71.8%, 0%, 15.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,178,520

CSS custom property--colour: #213DD8;

Brightness & contrast

Relative luminance0.08619WCAG 2.x, 0 is black and 1 is white

Perceived brightness88.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.71:1

Contrast with white7.71:1WCAG normal text: AAA

Contrast with black2.72:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#DEC227

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#005CDDno red cones; affects about 1% of men; ΔE 22.3 from the original

Deuteranopia#004AD5no green cones; the most common form, about 1% of men; ΔE 11.7 from the original

Tritanopia#006A87no blue cones; rare, and affects men and women equally; ΔE 85 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text7.71:1WCAG large text: AAA

Contrast with black, large text2.72:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 23.7 Dark blue · ΔE 24 Blue violet · ΔE 24.2 Medium blue · ΔE 24.7 Navy · ΔE 27.5 Slate blue · ΔE 27.6

Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 23.75, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#D8BC21

Analogous#2199D8, #6021D8

Triadic#D8213D, #3DD821

Split complementary#D86021, #99D821

Tetradic#D82199, #D8BC21, #21D860

Tints, shades & saturation

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

Lighter +40%#CED4F7

Lighter +30%#A1ADF1

Lighter +20%#7587EA

Lighter +10%#4960E3

Darker −10%#1A31AC

Darker −20%#132480

Darker −30%#0D1853

Darker −40%#060B27

More saturated +25%#0227F7

Less saturated −25%#4053B9

Channel breakdown

R33

G61

B216

Red33 (12.9%)

Green61 (23.9%)

Blue216 (84.7%)

Hue230.82°

Saturation (HSL)73.49%

Lightness48.82%

Dominant channelBlue

Hex per channelR 21 · G 3D · B D8

Keep nerding

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

#213DD8

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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