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Recognised as Colour

#1040D3

  • #1040D3
  • Blue
  • Dark
  • Nearest: Medium slateblue

#1040D3 is a blue with RGB values 16, 64, 211 and HSL 225°, 86%, 45%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#1040D3#1040D3
HEX#1040D3
RGBrgb(16, 64, 211)
RGB (0–1)0.0627, 0.251, 0.8275
RGB percentages6.3%, 25.1%, 82.7%
HSLhsl(225.2, 85.9%, 44.5%)
HSV / HSBhsv(225.2, 92.4%, 82.7%)
CMYK92.4%, 69.7%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,065,171
CSS custom property--colour: #1040D3;

Brightness & contrast

Relative luminance0.0848WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.79:1
Contrast with white7.79:1WCAG normal text: AAA
Contrast with black2.7:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#EFBF2C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005BD7no red cones; affects about 1% of men; ΔE 19.8 from the original
Deuteranopia#0049D0no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#006A85no blue cones; rare, and affects men and women equally; ΔE 81.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.79:1WCAG large text: AAA
Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.6Dark blue · ΔE 23.6Slate blue · ΔE 24.1Royal blue · ΔE 25Navy · ΔE 26.3Blue violet · ΔE 27.9
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D3A310
Analogous#10A1D3, #4210D3
Triadic#D31040, #40D310
Split complementary#D34210, #A2D310
Tetradic#D310A1, #D3A310, #10D342

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6C6F9
Lighter +30%#86A2F6
Lighter +20%#577DF2
Lighter +10%#2758EF
Darker −10%#0C32A4
Darker −20%#092374
Darker −30%#051545
Darker −40%#020615
More saturated +25%#0038E3
Less saturated −25%#2C4EB7

Channel breakdown

R16
G64
B211
Red16 (6.3%)
Green64 (25.1%)
Blue211 (82.7%)
Hue225.23°
Saturation (HSL)85.9%
Lightness44.51%
Dominant channelBlue
Hex per channelR 10 · G 40 · B D3

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Every value on this page was computed from “1040d3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.