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Recognised as Colour

#03091C

  • #03091C
  • Blue
  • Dark
  • Nearest: Black

#03091C is a blue with RGB values 3, 9, 28 and HSL 226°, 81%, 6%. It is a dark colour, so white text on it reaches 19.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#03091C#03091C
HEX#03091C
RGBrgb(3, 9, 28)
RGB (0–1)0.0118, 0.0353, 0.1098
RGB percentages1.2%, 3.5%, 11%
HSLhsl(225.6, 80.6%, 6.1%)
HSV / HSBhsv(225.6, 89.3%, 11%)
CMYK89.3%, 67.9%, 0%, 89%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer198,940
CSS custom property--colour: #03091C;

Brightness & contrast

Relative luminance0.00299WCAG 2.x, 0 is black and 1 is white
Perceived brightness11.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.82:1
Contrast with white19.82:1WCAG normal text: AAA
Contrast with black1.06:1WCAG normal text: Fail
Greyscale equivalent#090909
Inverted#FCF6E3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#020B1Dno red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#00091Cno green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#000D11no blue cones; rare, and affects men and women equally; ΔE 9.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.82:1WCAG large text: AAA
Contrast with black, large text1.06:1WCAG large text: Fail

Named colours

Black · ΔE 12.1Dark slate grey · ΔE 32.8Dim grey · ΔE 43.3Dark slateblue · ΔE 47.8Midnight blue · ΔE 49.8Slate grey · ΔE 50.4
Nearest named CSS colourBlack (#000000)ΔE 12.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1C1603
Analogous#03151C, #0A031C
Triadic#1C0309, #091C03
Split complementary#1C0A03, #151C03
Tetradic#1C0315, #1C1603, #031C0A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1744D4
Lighter +30%#1235A6
Lighter +20%#0D2778
Lighter +10%#08184A
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00071F
Less saturated −25%#070B18

Channel breakdown

R3
G9
B28
Red3 (1.2%)
Green9 (3.5%)
Blue28 (11%)
Hue225.6°
Saturation (HSL)80.65%
Lightness6.08%
Dominant channelBlue
Hex per channelR 03 · G 09 · B 1C

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Every value on this page was computed from “03091c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.