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Recognised as Colour

#11284B

  • #11284B
  • Blue
  • Dark
  • Nearest: Black

#11284B is a blue with RGB values 17, 40, 75 and HSL 216°, 63%, 18%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#11284B#11284B
HEX#11284B
RGBrgb(17, 40, 75)
RGB (0–1)0.0667, 0.1569, 0.2941
RGB percentages6.7%, 15.7%, 29.4%
HSLhsl(216.2, 63%, 18%)
HSV / HSBhsv(216.2, 77.3%, 29.4%)
CMYK77.3%, 46.7%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,124,427
CSS custom property--colour: #11284B;

Brightness & contrast

Relative luminance0.02145WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.7:1
Contrast with white14.7:1WCAG normal text: AAA
Contrast with black1.43:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#EED7B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#172B4Cno red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#0E264Ano green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#003035no blue cones; rare, and affects men and women equally; ΔE 24.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.7:1WCAG large text: AAA
Contrast with black, large text1.43:1WCAG large text: Fail

Named colours

Black · ΔE 29.7Dark slate grey · ΔE 30.4Dark slateblue · ΔE 31.2Midnight blue · ΔE 36.8Dim grey · ΔE 37.6Steel blue · ΔE 38.1
Nearest named CSS colourBlack (#000000)ΔE 29.67, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B3411
Analogous#11454B, #17114B
Triadic#4B1128, #284B11
Split complementary#4B1711, #454B11
Tetradic#4B1145, #4B3411, #114B17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5186D7
Lighter +30%#2D6BC8
Lighter +20%#24549E
Lighter +10%#1A3E75
Darker −10%#081221
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#052657
Less saturated −25%#1C2A40

Channel breakdown

R17
G40
B75
Red17 (6.7%)
Green40 (15.7%)
Blue75 (29.4%)
Hue216.21°
Saturation (HSL)63.04%
Lightness18.04%
Dominant channelBlue
Hex per channelR 11 · G 28 · B 4B

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Every value on this page was computed from “11284b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.