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Recognised as Colour

#03040B

  • #03040B
  • Blue
  • Dark
  • Nearest: Black

#03040B is a blue with RGB values 3, 4, 11 and HSL 233°, 57%, 3%. It is a dark colour, so white text on it reaches 20.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#03040B#03040B
HEX#03040B
RGBrgb(3, 4, 11)
RGB (0–1)0.0118, 0.0157, 0.0431
RGB percentages1.2%, 1.6%, 4.3%
HSLhsl(232.5, 57.1%, 2.7%)
HSV / HSBhsv(232.5, 72.7%, 4.3%)
CMYK72.7%, 63.6%, 0%, 95.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer197,643
CSS custom property--colour: #03040B;

Brightness & contrast

Relative luminance0.0013WCAG 2.x, 0 is black and 1 is white
Perceived brightness5.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.47:1
Contrast with white20.47:1WCAG normal text: AAA
Contrast with black1.03:1WCAG normal text: Fail
Greyscale equivalent#040404
Inverted#FCFBF4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#02050Bno red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#02040Bno green cones; the most common form, about 1% of men; ΔE 0.3 from the original
Tritanopia#010506no blue cones; rare, and affects men and women equally; ΔE 2.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.47:1WCAG large text: AAA
Contrast with black, large text1.03:1WCAG large text: Fail

Named colours

Black · ΔE 3.1Dark slate grey · ΔE 32.6Dim grey · ΔE 43.3Slate grey · ΔE 52.3Gray · ΔE 52.5Dark slateblue · ΔE 55.4
Nearest named CSS colourBlack (#000000)ΔE 3.08, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0B0A03
Analogous#03080B, #06030B
Triadic#0B0304, #040B03
Split complementary#0B0603, #080B03
Tetradic#0B0308, #0B0A03, #030B06

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2F3EAB
Lighter +30%#243083
Lighter +20%#19215B
Lighter +10%#0E1333
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#01030D
Less saturated −25%#050509

Channel breakdown

R3
G4
B11
Red3 (1.2%)
Green4 (1.6%)
Blue11 (4.3%)
Hue232.5°
Saturation (HSL)57.14%
Lightness2.75%
Dominant channelBlue
Hex per channelR 03 · G 04 · B 0B

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Every value on this page was computed from “03040b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.