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Colour

#040A2C

  • #040A2C
  • Blue
  • Dark
  • Nearest: Black

#040A2C is a blue with RGB values 4, 10, 44 and HSL 231°, 83%, 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

#040A2C#040A2C
HEX#040A2C
RGBrgb(4, 10, 44)
RGB (0–1)0.0157, 0.0392, 0.1725
RGB percentages1.6%, 3.9%, 17.3%
HSLhsl(231, 83.3%, 9.4%)
HSV / HSBhsv(231, 90.9%, 17.3%)
CMYK90.9%, 77.3%, 0%, 82.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer264,748
CSS custom property--colour: #040A2C;

Brightness & contrast

Relative luminance0.00425WCAG 2.x, 0 is black and 1 is white
Perceived brightness16.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.36:1
Contrast with white19.36:1WCAG normal text: AAA
Contrast with black1.08:1WCAG normal text: Fail
Greyscale equivalent#0B0B0B
Inverted#FBF5D3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00102Dno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#000C2Bno green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#001319no blue cones; rare, and affects men and women equally; ΔE 20.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.36:1WCAG large text: AAA
Contrast with black, large text1.08:1WCAG large text: Fail

Named colours

Black · ΔE 24Dark slateblue · ΔE 37.8Midnight blue · ΔE 37.9Dark slate grey · ΔE 38.8Dim grey · ΔE 47Steel blue · ΔE 51.2
Nearest named CSS colourBlack (#000000)ΔE 24.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2C2604
Analogous#041E2C, #12042C
Triadic#2C040A, #0A2C04
Split complementary#2C1204, #1E2C04
Tetradic#2C041E, #2C2604, #042C12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1534E7
Lighter +30%#112AB8
Lighter +20%#0C1F8A
Lighter +10%#08155B
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000730
Less saturated −25%#0A0E26

Channel breakdown

R4
G10
B44
Red4 (1.6%)
Green10 (3.9%)
Blue44 (17.3%)
Hue231°
Saturation (HSL)83.33%
Lightness9.41%
Dominant channelBlue
Hex per channelR 04 · G 0A · B 2C

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Every value on this page was computed from “040a2c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.