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Recognised as Colour

#16215B

  • #16215B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#16215B is a blue with RGB values 22, 33, 91 and HSL 230°, 61%, 22%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#16215B#16215B
HEX#16215B
RGBrgb(22, 33, 91)
RGB (0–1)0.0863, 0.1294, 0.3569
RGB percentages8.6%, 12.9%, 35.7%
HSLhsl(230.4, 61.1%, 22.2%)
HSV / HSBhsv(230.4, 75.8%, 35.7%)
CMYK75.8%, 63.7%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,450,331
CSS custom property--colour: #16215B;

Brightness & contrast

Relative luminance0.02014WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.97:1
Contrast with white14.97:1WCAG normal text: AAA
Contrast with black1.4:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#E9DEA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002A5Dno red cones; affects about 1% of men; ΔE 8.9 from the original
Deuteranopia#00245Ano green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#002F3Ano blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.97:1WCAG large text: AAA
Contrast with black, large text1.4:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.4Midnight blue · ΔE 19.3Rebecca purple · ΔE 32.5Indigo · ΔE 38.3Slate blue · ΔE 41.1Navy · ΔE 41.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B5016
Analogous#16445B, #2D165B
Triadic#5B1621, #215B16
Split complementary#5B2D16, #445B16
Tetradic#5B1644, #5B5016, #165B2D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6476D9
Lighter +30%#3B52CF
Lighter +20%#2A3FAD
Lighter +10%#203084
Darker −10%#0C1232
Darker −20%#020309
Darker −30%#000000
Darker −40%#000000
More saturated +25%#081769
Less saturated −25%#242B4D

Channel breakdown

R22
G33
B91
Red22 (8.6%)
Green33 (12.9%)
Blue91 (35.7%)
Hue230.43°
Saturation (HSL)61.06%
Lightness22.16%
Dominant channelBlue
Hex per channelR 16 · G 21 · B 5B

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Every value on this page was computed from “16215b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.