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Recognised as Colour

#040A1C

  • #040A1C
  • Blue
  • Dark
  • Nearest: Black

#040A1C is a blue with RGB values 4, 10, 28 and HSL 225°, 75%, 6%. It is a dark colour, so white text on it reaches 19.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040A1C#040A1C
HEX#040A1C
RGBrgb(4, 10, 28)
RGB (0–1)0.0157, 0.0392, 0.1098
RGB percentages1.6%, 3.9%, 11%
HSLhsl(225, 75%, 6.3%)
HSV / HSBhsv(225, 85.7%, 11%)
CMYK85.7%, 64.3%, 0%, 89%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer264,732
CSS custom property--colour: #040A1C;

Brightness & contrast

Relative luminance0.00327WCAG 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 19.71:1
Contrast with white19.71:1WCAG normal text: AAA
Contrast with black1.07:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#FBF5E3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#030C1Dno red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#010A1Cno green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#000E11no blue cones; rare, and affects men and women equally; ΔE 10 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.71:1WCAG large text: AAA
Contrast with black, large text1.07:1WCAG large text: Fail

Named colours

Black · ΔE 11.7Dark slate grey · ΔE 32.5Dim grey · ΔE 43Dark slateblue · ΔE 47.9Midnight blue · ΔE 50.1Slate grey · ΔE 50.1
Nearest named CSS colourBlack (#000000)ΔE 11.73, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1C1604
Analogous#04161C, #0A041C
Triadic#1C040A, #0A1C04
Split complementary#1C0A04, #161C04
Tetradic#1C0416, #1C1604, #041C0A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1D4ACF
Lighter +30%#173AA2
Lighter +20%#112A75
Lighter +10%#0A1A49
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000820
Less saturated −25%#080C18

Channel breakdown

R4
G10
B28
Red4 (1.6%)
Green10 (3.9%)
Blue28 (11%)
Hue225°
Saturation (HSL)75%
Lightness6.27%
Dominant channelBlue
Hex per channelR 04 · G 0A · B 1C

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Every value on this page was computed from “040a1c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.