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Recognised as Colour

#0B284E

  • #0B284E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0B284E is a blue with RGB values 11, 40, 78 and HSL 214°, 75%, 17%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0B284E#0B284E
HEX#0B284E
RGBrgb(11, 40, 78)
RGB (0–1)0.0431, 0.1569, 0.3059
RGB percentages4.3%, 15.7%, 30.6%
HSLhsl(214, 75.3%, 17.5%)
HSV / HSBhsv(214, 85.9%, 30.6%)
CMYK85.9%, 48.7%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer731,214
CSS custom property--colour: #0B284E;

Brightness & contrast

Relative luminance0.02139WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.71:1
Contrast with white14.71:1WCAG normal text: AAA
Contrast with black1.43:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#F4D7B1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#142B4Fno red cones; affects about 1% of men; ΔE 2.2 from the original
Deuteranopia#07254Dno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#003137no blue cones; rare, and affects men and women equally; ΔE 25.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.71:1WCAG large text: AAA
Contrast with black, large text1.43:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 29.9Black · ΔE 31.5Dark slate grey · ΔE 32.1Midnight blue · ΔE 35.1Steel blue · ΔE 37.9Dim grey · ΔE 39
Nearest named CSS colourDark slateblue (#483D8B)ΔE 29.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E310B
Analogous#0B4A4E, #0F0B4E
Triadic#4E0B28, #284E0B
Split complementary#4E0F0B, #4A4E0B
Tetradic#4E0B4A, #4E310B, #0B4E0F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4188E4
Lighter +30%#1E6DD4
Lighter +20%#1856A7
Lighter +10%#113F7B
Darker −10%#051121
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002759
Less saturated −25%#162943

Channel breakdown

R11
G40
B78
Red11 (4.3%)
Green40 (15.7%)
Blue78 (30.6%)
Hue214.03°
Saturation (HSL)75.28%
Lightness17.45%
Dominant channelBlue
Hex per channelR 0B · G 28 · B 4E

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Every value on this page was computed from “0b284e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.