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Recognised as Colour

#215BB6

  • #215BB6
  • Blue
  • Dark
  • Nearest: Royal blue

#215BB6 is a blue with RGB values 33, 91, 182 and HSL 217°, 69%, 42%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#215BB6#215BB6
HEX#215BB6
RGBrgb(33, 91, 182)
RGB (0–1)0.1294, 0.3569, 0.7137
RGB percentages12.9%, 35.7%, 71.4%
HSLhsl(216.6, 69.3%, 42.2%)
HSV / HSBhsv(216.6, 81.9%, 71.4%)
CMYK81.9%, 50%, 0%, 28.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,186,166
CSS custom property--colour: #215BB6;

Brightness & contrast

Relative luminance0.11183WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.49:1
Contrast with white6.49:1WCAG normal text: AA
Contrast with black3.24:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#DEA449

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2365B9no red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#0058B4no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#007180no blue cones; rare, and affects men and women equally; ΔE 52.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.49:1WCAG large text: AAA
Contrast with black, large text3.24:1WCAG large text: AA

Named colours

Royal blue · ΔE 17.9Dark slateblue · ΔE 18Slate blue · ΔE 21.7Dodgerblue · ΔE 22.6Cornflower blue · ΔE 23.2Medium purple · ΔE 26.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 17.89, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B67C21
Analogous#21A5B6, #3221B6
Triadic#B6215B, #5BB621
Split complementary#B63121, #A6B621
Tetradic#B621A5, #B67C21, #21B631

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2CBF1
Lighter +30%#87ADE9
Lighter +20%#5C90E1
Lighter +10%#3072DA
Darker −10%#19458B
Darker −20%#113060
Darker −30%#0A1A34
Darker −40%#020509
More saturated +25%#0655D1
Less saturated −25%#3C619B

Channel breakdown

R33
G91
B182
Red33 (12.9%)
Green91 (35.7%)
Blue182 (71.4%)
Hue216.64°
Saturation (HSL)69.3%
Lightness42.16%
Dominant channelBlue
Hex per channelR 21 · G 5B · B B6

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Every value on this page was computed from “215bb6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.