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Recognised as Colour

#1641DB

  • #1641DB
  • Blue
  • Dark
  • Nearest: Medium slateblue

#1641DB is a blue with RGB values 22, 65, 219 and HSL 227°, 82%, 47%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#1641DB#1641DB
HEX#1641DB
RGBrgb(22, 65, 219)
RGB (0–1)0.0863, 0.2549, 0.8588
RGB percentages8.6%, 25.5%, 85.9%
HSLhsl(226.9, 81.7%, 47.3%)
HSV / HSBhsv(226.9, 90%, 85.9%)
CMYK90%, 70.3%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,458,651
CSS custom property--colour: #1641DB;

Brightness & contrast

Relative luminance0.09066WCAG 2.x, 0 is black and 1 is white
Perceived brightness90 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.46:1
Contrast with white7.46:1WCAG normal text: AAA
Contrast with black2.81:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#E9BE24

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EE0no red cones; affects about 1% of men; ΔE 20.7 from the original
Deuteranopia#004CD8no green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#006D89no blue cones; rare, and affects men and women equally; ΔE 84.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.46:1WCAG large text: AAA
Contrast with black, large text2.81:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 22.9Dark blue · ΔE 25.2Blue violet · ΔE 25.8Medium blue · ΔE 26.4Slate blue · ΔE 26.8Royal blue · ΔE 27.6
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 22.9, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DBB016
Analogous#16A3DB, #4D16DB
Triadic#DB1641, #41DB16
Split complementary#DB4D16, #A3DB16
Tetradic#DB16A3, #DBB016, #16DB4D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4D0F9
Lighter +30%#96AAF4
Lighter +20%#6785F0
Lighter +10%#3960EB
Darker −10%#1133AD
Darker −20%#0D257E
Darker −30%#081850
Darker −40%#030A22
More saturated +25%#0035F1
Less saturated −25%#3452BD

Channel breakdown

R22
G65
B219
Red22 (8.6%)
Green65 (25.5%)
Blue219 (85.9%)
Hue226.9°
Saturation (HSL)81.74%
Lightness47.25%
Dominant channelBlue
Hex per channelR 16 · G 41 · B DB

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Every value on this page was computed from “1641db” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.