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Colour

#040C18

  • #040C18
  • Blue
  • Dark
  • Nearest: Black

#040C18 is a blue with RGB values 4, 12, 24 and HSL 216°, 71%, 5%. It is a dark colour, so white text on it reaches 19.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040C18#040C18
HEX#040C18
RGBrgb(4, 12, 24)
RGB (0–1)0.0157, 0.0471, 0.0941
RGB percentages1.6%, 4.7%, 9.4%
HSLhsl(216, 71.4%, 5.5%)
HSV / HSBhsv(216, 83.3%, 9.4%)
CMYK83.3%, 50%, 0%, 90.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer265,240
CSS custom property--colour: #040C18;

Brightness & contrast

Relative luminance0.00355WCAG 2.x, 0 is black and 1 is white
Perceived brightness12.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.61:1
Contrast with white19.61:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#FBF3E7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#070D19no red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#050B18no green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#000F10no blue cones; rare, and affects men and women equally; ΔE 7.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.61:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 8.2Dark slate grey · ΔE 30.8Dim grey · ΔE 41.9Slate grey · ΔE 49.8Gray · ΔE 50.9Dark slateblue · ΔE 51.1
Nearest named CSS colourBlack (#000000)ΔE 8.21, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#181004
Analogous#041618, #060418
Triadic#18040C, #0C1804
Split complementary#180604, #161804
Tetradic#180416, #181004, #041806

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2163C7
Lighter +30%#1A4E9B
Lighter +20%#13386F
Lighter +10%#0B2244
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000B1C
Less saturated −25%#080D14

Channel breakdown

R4
G12
B24
Red4 (1.6%)
Green12 (4.7%)
Blue24 (9.4%)
Hue216°
Saturation (HSL)71.43%
Lightness5.49%
Dominant channelBlue
Hex per channelR 04 · G 0C · B 18

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Every value on this page was computed from “040c18” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.