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Recognised as Colour

#28327F

  • #28327F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#28327F is a blue with RGB values 40, 50, 127 and HSL 233°, 52%, 33%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#28327F#28327F
HEX#28327F
RGBrgb(40, 50, 127)
RGB (0–1)0.1569, 0.1961, 0.498
RGB percentages15.7%, 19.6%, 49.8%
HSLhsl(233.1, 52.1%, 32.7%)
HSV / HSBhsv(233.1, 68.5%, 49.8%)
CMYK68.5%, 60.6%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,634,367
CSS custom property--colour: #28327F;

Brightness & contrast

Relative luminance0.04265WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.33:1
Contrast with white11.33:1WCAG normal text: AAA
Contrast with black1.85:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#D7CD80

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003E82no red cones; affects about 1% of men; ΔE 11.7 from the original
Deuteranopia#00367Dno green cones; the most common form, about 1% of men; ΔE 7.8 from the original
Tritanopia#004553no blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.33:1WCAG large text: AAA
Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 7.7Midnight blue · ΔE 13.4Rebecca purple · ΔE 22Slate blue · ΔE 27.9Indigo · ΔE 30.5Royal blue · ΔE 31.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 7.69, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F7528
Analogous#285D7F, #4A287F
Triadic#7F2832, #327F28
Split complementary#7F4A28, #5D7F28
Tetradic#7F285D, #7F7528, #287F4A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#959EDE
Lighter +30%#6F7AD1
Lighter +20%#4856C5
Lighter +10%#3441A6
Darker −10%#1C2358
Darker −20%#101331
Darker −30%#03040B
Darker −40%#000000
More saturated +25%#132294
Less saturated −25%#3D426A

Channel breakdown

R40
G50
B127
Red40 (15.7%)
Green50 (19.6%)
Blue127 (49.8%)
Hue233.1°
Saturation (HSL)52.1%
Lightness32.75%
Dominant channelBlue
Hex per channelR 28 · G 32 · B 7F

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Every value on this page was computed from “28327f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.