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Colour

#040B28

  • #040B28
  • Blue
  • Dark
  • Nearest: Black

#040B28 is a blue with RGB values 4, 11, 40 and HSL 228°, 82%, 9%. It is a dark colour, so white text on it reaches 19.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040B28#040B28
HEX#040B28
RGBrgb(4, 11, 40)
RGB (0–1)0.0157, 0.0431, 0.1569
RGB percentages1.6%, 4.3%, 15.7%
HSLhsl(228.3, 81.8%, 8.6%)
HSV / HSBhsv(228.3, 90%, 15.7%)
CMYK90%, 72.5%, 0%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer265,000
CSS custom property--colour: #040B28;

Brightness & contrast

Relative luminance0.00418WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.38:1
Contrast with white19.38:1WCAG normal text: AAA
Contrast with black1.08:1WCAG normal text: Fail
Greyscale equivalent#0C0C0C
Inverted#FBF4D7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000F29no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#000C27no green cones; the most common form, about 1% of men; ΔE 2 from the original
Tritanopia#001217no blue cones; rare, and affects men and women equally; ΔE 17.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.38:1WCAG large text: AAA
Contrast with black, large text1.08:1WCAG large text: Fail

Named colours

Black · ΔE 20.6Dark slate grey · ΔE 36.3Dark slateblue · ΔE 40.6Midnight blue · ΔE 41.4Dim grey · ΔE 45.4Slate grey · ΔE 50.5
Nearest named CSS colourBlack (#000000)ΔE 20.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#282104
Analogous#041D28, #0F0428
Triadic#28040B, #0B2804
Split complementary#280F04, #1D2804
Tetradic#28041D, #282104, #04280F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#173EE1
Lighter +30%#1231B3
Lighter +20%#0D2585
Lighter +10%#091856
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00092C
Less saturated −25%#0A0E23

Channel breakdown

R4
G11
B40
Red4 (1.6%)
Green11 (4.3%)
Blue40 (15.7%)
Hue228.33°
Saturation (HSL)81.82%
Lightness8.63%
Dominant channelBlue
Hex per channelR 04 · G 0B · B 28

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Every value on this page was computed from “040b28” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.