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Colour

#18519A

  • #18519A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18519A is a blue with RGB values 24, 81, 154 and HSL 214°, 73%, 35%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18519A#18519A
HEX#18519A
RGBrgb(24, 81, 154)
RGB (0–1)0.0941, 0.3176, 0.6039
RGB percentages9.4%, 31.8%, 60.4%
HSLhsl(213.7, 73%, 34.9%)
HSV / HSBhsv(213.7, 84.4%, 60.4%)
CMYK84.4%, 47.4%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,593,754
CSS custom property--colour: #18519A;

Brightness & contrast

Relative luminance0.08412WCAG 2.x, 0 is black and 1 is white
Perceived brightness82 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.83:1
Contrast with white7.83:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#E7AE65

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#29589Dno red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#024C99no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#00636Eno blue cones; rare, and affects men and women equally; ΔE 43.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.83:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.7Steel blue · ΔE 26Cornflower blue · ΔE 27.5Royal blue · ΔE 29.1Midnight blue · ΔE 29.1Dodgerblue · ΔE 30.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A6118
Analogous#18929A, #20189A
Triadic#9A1851, #519A18
Split complementary#9A2018, #929A18
Tetradic#9A1892, #9A6118, #189A20

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90B9EE
Lighter +30%#649DE7
Lighter +20%#3882E0
Lighter +10%#1F68C6
Darker −10%#113A6E
Darker −20%#0A2342
Darker −30%#030B16
Darker −40%#000000
More saturated +25%#024EB0
Less saturated −25%#2E5484

Channel breakdown

R24
G81
B154
Red24 (9.4%)
Green81 (31.8%)
Blue154 (60.4%)
Hue213.69°
Saturation (HSL)73.03%
Lightness34.9%
Dominant channelBlue
Hex per channelR 18 · G 51 · B 9A

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Every value on this page was computed from “18519a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.