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Recognised as Colour

#18327F

  • #18327F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18327F is a blue with RGB values 24, 50, 127 and HSL 225°, 68%, 30%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18327F#18327F
HEX#18327F
RGBrgb(24, 50, 127)
RGB (0–1)0.0941, 0.1961, 0.498
RGB percentages9.4%, 19.6%, 49.8%
HSLhsl(224.9, 68.2%, 29.6%)
HSV / HSBhsv(224.9, 81.1%, 49.8%)
CMYK81.1%, 60.6%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,585,791
CSS custom property--colour: #18327F;

Brightness & contrast

Relative luminance0.04008WCAG 2.x, 0 is black and 1 is white
Perceived brightness59 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.66:1
Contrast with white11.66:1WCAG normal text: AAA
Contrast with black1.8:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E7CD80

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003D82no red cones; affects about 1% of men; ΔE 9.3 from the original
Deuteranopia#00347Eno green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#004553no blue cones; rare, and affects men and women equally; ΔE 47.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.66:1WCAG large text: AAA
Contrast with black, large text1.8:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10Midnight blue · ΔE 14.1Rebecca purple · ΔE 24.2Slate blue · ΔE 29Royal blue · ΔE 31.2Indigo · ΔE 32.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.99, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F6518
Analogous#18667F, #32187F
Triadic#7F1832, #327F18
Split complementary#7F3118, #667F18
Tetradic#7F1866, #7F6518, #187F31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D97E6
Lighter +30%#5275DE
Lighter +20%#2854D5
Lighter +10%#2043AA
Darker −10%#102154
Darker −20%#081029
Darker −30%#000000
Darker −40%#000000
More saturated +25%#052992
Less saturated −25%#2B3B6C

Channel breakdown

R24
G50
B127
Red24 (9.4%)
Green50 (19.6%)
Blue127 (49.8%)
Hue224.85°
Saturation (HSL)68.21%
Lightness29.61%
Dominant channelBlue
Hex per channelR 18 · G 32 · B 7F

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Every value on this page was computed from “18327f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.