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Recognised as Colour

#030B3A

  • #030B3A
  • Blue
  • Dark
  • Nearest: Midnight blue

#030B3A is a blue with RGB values 3, 11, 58 and HSL 231°, 90%, 12%. It is a dark colour, so white text on it reaches 18.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#030B3A#030B3A
HEX#030B3A
RGBrgb(3, 11, 58)
RGB (0–1)0.0118, 0.0431, 0.2275
RGB percentages1.2%, 4.3%, 22.7%
HSLhsl(231.3, 90.2%, 12%)
HSV / HSBhsv(231.3, 94.8%, 22.7%)
CMYK94.8%, 81%, 0%, 77.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer199,482
CSS custom property--colour: #030B3A;

Brightness & contrast

Relative luminance0.00564WCAG 2.x, 0 is black and 1 is white
Perceived brightness21.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.87:1
Contrast with white18.87:1WCAG normal text: AAA
Contrast with black1.11:1WCAG normal text: Fail
Greyscale equivalent#0D0D0D
Inverted#FCF4C5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00143Bno red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#000E39no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#001821no blue cones; rare, and affects men and women equally; ΔE 29.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.87:1WCAG large text: AAA
Contrast with black, large text1.11:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 27.2Dark slateblue · ΔE 30.1Black · ΔE 34.6Rebecca purple · ΔE 42.3Indigo · ΔE 45.4Dark slate grey · ΔE 46.4
Nearest named CSS colourMidnight blue (#191970)ΔE 27.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3A3203
Analogous#03273A, #16033A
Triadic#3A030B, #0B3A03
Split complementary#3A1603, #273A03
Tetradic#3A0326, #3A3203, #033A16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1636F3
Lighter +30%#0B27CB
Lighter +20%#081D9B
Lighter +10%#06146A
Darker −10%#00020A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00093D
Less saturated −25%#0B1032

Channel breakdown

R3
G11
B58
Red3 (1.2%)
Green11 (4.3%)
Blue58 (22.7%)
Hue231.27°
Saturation (HSL)90.16%
Lightness11.96%
Dominant channelBlue
Hex per channelR 03 · G 0B · B 3A

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Every value on this page was computed from “030b3a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.