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Recognised as Colour

#28176F

  • #28176F
  • Blue
  • Dark
  • Nearest: Midnight blue

#28176F is a blue with RGB values 40, 23, 111 and HSL 252°, 66%, 26%. It is a dark colour, so white text on it reaches 14.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#28176F#28176F
HEX#28176F
RGBrgb(40, 23, 111)
RGB (0–1)0.1569, 0.0902, 0.4353
RGB percentages15.7%, 9%, 43.5%
HSLhsl(251.6, 65.7%, 26.3%)
HSV / HSBhsv(251.6, 79.3%, 43.5%)
CMYK64%, 79.3%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,627,439
CSS custom property--colour: #28176F;

Brightness & contrast

Relative luminance0.02212WCAG 2.x, 0 is black and 1 is white
Perceived brightness46.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.56:1
Contrast with white14.56:1WCAG normal text: AAA
Contrast with black1.44:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#D7E890

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002C72no red cones; affects about 1% of men; ΔE 17.7 from the original
Deuteranopia#00266Dno green cones; the most common form, about 1% of men; ΔE 15.1 from the original
Tritanopia#003042no blue cones; rare, and affects men and women equally; ΔE 52.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.56:1WCAG large text: AAA
Contrast with black, large text1.44:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 3.3Dark slateblue · ΔE 17.4Rebecca purple · ΔE 18.5Indigo · ΔE 18.7Navy · ΔE 21.8Dark blue · ΔE 26.5
Nearest named CSS colourMidnight blue (#191970)ΔE 3.25, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E6F17
Analogous#17326F, #54176F
Triadic#6F2817, #176F28
Split complementary#6F5417, #326F17
Tetradic#6F1732, #5E6F17, #176F54

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8671E1
Lighter +30%#6346D9
Lighter +20%#4629C3
Lighter +10%#372099
Darker −10%#190E45
Darker −20%#0A051B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1E0680
Less saturated −25%#32285E

Channel breakdown

R40
G23
B111
Red40 (15.7%)
Green23 (9%)
Blue111 (43.5%)
Hue251.59°
Saturation (HSL)65.67%
Lightness26.27%
Dominant channelBlue
Hex per channelR 28 · G 17 · B 6F

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Every value on this page was computed from “28176f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.