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Recognised as Colour

#104A8F

  • #104A8F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#104A8F is a blue with RGB values 16, 74, 143 and HSL 213°, 80%, 31%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#104A8F#104A8F
HEX#104A8F
RGBrgb(16, 74, 143)
RGB (0–1)0.0627, 0.2902, 0.5608
RGB percentages6.3%, 29%, 56.1%
HSLhsl(212.6, 79.9%, 31.2%)
HSV / HSBhsv(212.6, 88.8%, 56.1%)
CMYK88.8%, 48.3%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,067,663
CSS custom property--colour: #104A8F;

Brightness & contrast

Relative luminance0.06991WCAG 2.x, 0 is black and 1 is white
Perceived brightness75 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.76:1
Contrast with white8.76:1WCAG normal text: AAA
Contrast with black2.4:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#EFB570

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#235192no red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#00468Eno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#005B65no blue cones; rare, and affects men and women equally; ΔE 42.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.76:1WCAG large text: AAA
Contrast with black, large text2.4:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.5Steel blue · ΔE 27.1Midnight blue · ΔE 28Cornflower blue · ΔE 30.8Royal blue · ΔE 32Slate blue · ΔE 33.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.5, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F5510
Analogous#108A8F, #15108F
Triadic#8F104A, #4A8F10
Split complementary#8F1510, #8A8F10
Tetradic#8F108A, #8F5510, #108F15

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7BB0F0
Lighter +30%#4D95EB
Lighter +20%#1F7AE6
Lighter +10%#1562BD
Darker −10%#0B3261
Darker −20%#061B33
Darker −30%#010305
Darker −40%#000000
More saturated +25%#00499F
Less saturated −25%#244C7B

Channel breakdown

R16
G74
B143
Red16 (6.3%)
Green74 (29%)
Blue143 (56.1%)
Hue212.6°
Saturation (HSL)79.87%
Lightness31.18%
Dominant channelBlue
Hex per channelR 10 · G 4A · B 8F

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Every value on this page was computed from “104a8f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.