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Recognised as Colour

#104EA8

  • #104EA8
  • Blue
  • Dark
  • Nearest: Dark slateblue

#104EA8 is a blue with RGB values 16, 78, 168 and HSL 216°, 83%, 36%. 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

#104EA8#104EA8
HEX#104EA8
RGBrgb(16, 78, 168)
RGB (0–1)0.0627, 0.3059, 0.6588
RGB percentages6.3%, 30.6%, 65.9%
HSLhsl(215.5, 82.6%, 36.1%)
HSV / HSBhsv(215.5, 90.5%, 65.9%)
CMYK90.5%, 53.6%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,068,712
CSS custom property--colour: #104EA8;

Brightness & contrast

Relative luminance0.08386WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.84:1
Contrast with white7.84:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#EFB157

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0359ABno red cones; affects about 1% of men; ΔE 8.3 from the original
Deuteranopia#004BA6no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#006473no blue cones; rare, and affects men and women equally; ΔE 52.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.84:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 14.9Royal blue · ΔE 19.8Slate blue · ΔE 22Midnight blue · ΔE 24.1Rebecca purple · ΔE 26.5Dodgerblue · ΔE 27.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A86A10
Analogous#109AA8, #1E10A8
Triadic#A8104E, #4EA810
Split complementary#A81E10, #9AA810
Tetradic#A8109A, #A86A10, #10A81E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#90B9F4
Lighter +30%#619BF0
Lighter +20%#327EEC
Lighter +10%#1464D7
Darker −10%#0C3879
Darker −20%#07234B
Darker −30%#030D1C
Darker −40%#000000
More saturated +25%#004BB8
Less saturated −25%#275291

Channel breakdown

R16
G78
B168
Red16 (6.3%)
Green78 (30.6%)
Blue168 (65.9%)
Hue215.53°
Saturation (HSL)82.61%
Lightness36.08%
Dominant channelBlue
Hex per channelR 10 · G 4E · B A8

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Every value on this page was computed from “104ea8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.