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Recognised as Colour

#040FD8

  • #040FD8
  • Blue
  • Dark
  • Nearest: Medium blue

#040FD8 is a blue with RGB values 4, 15, 216 and HSL 237°, 96%, 43%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#040FD8#040FD8
HEX#040FD8
RGBrgb(4, 15, 216)
RGB (0–1)0.0157, 0.0588, 0.8471
RGB percentages1.6%, 5.9%, 84.7%
HSLhsl(236.9, 96.4%, 43.1%)
HSV / HSBhsv(236.9, 98.1%, 84.7%)
CMYK98.1%, 93.1%, 0%, 15.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer266,200
CSS custom property--colour: #040FD8;

Brightness & contrast

Relative luminance0.05325WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.17:1
Contrast with white10.17:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#1B1B1B
Inverted#FBF027

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004CDDno red cones; affects about 1% of men; ΔE 33.7 from the original
Deuteranopia#0035D5no green cones; the most common form, about 1% of men; ΔE 20.2 from the original
Tritanopia#005B7Fno blue cones; rare, and affects men and women equally; ΔE 101.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.17:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Medium blue · ΔE 3.3Blue · ΔE 19.5Blue violet · ΔE 23.9Dark violet · ΔE 27.6Dark blue · ΔE 32.4Dark orchid · ΔE 36.9
Nearest named CSS colourMedium blue (#0000CD)ΔE 3.3, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D8CD04
Analogous#0479D8, #6304D8
Triadic#D8040F, #0FD804
Split complementary#D86304, #79D804
Tetradic#D80479, #D8CD04, #04D863

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABAFFD
Lighter +30%#787FFD
Lighter +20%#4650FC
Lighter +10%#1420FB
Darker −10%#030CA6
Darker −20%#020874
Darker −30%#010542
Darker −40%#000110
More saturated +25%#000BDC
Less saturated −25%#2028BC

Channel breakdown

R4
G15
B216
Red4 (1.6%)
Green15 (5.9%)
Blue216 (84.7%)
Hue236.89°
Saturation (HSL)96.36%
Lightness43.14%
Dominant channelBlue
Hex per channelR 04 · G 0F · B D8

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Every value on this page was computed from “040fd8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.