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Recognised as Colour

#0A3170

  • #0A3170
  • Blue
  • Dark
  • Nearest: Dark slateblue

#0A3170 is a blue with RGB values 10, 49, 112 and HSL 217°, 84%, 24%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#0A3170#0A3170
HEX#0A3170
RGBrgb(10, 49, 112)
RGB (0–1)0.0392, 0.1922, 0.4392
RGB percentages3.9%, 19.2%, 43.9%
HSLhsl(217.1, 83.6%, 23.9%)
HSV / HSBhsv(217.1, 91.1%, 43.9%)
CMYK91.1%, 56.3%, 0%, 56.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer668,016
CSS custom property--colour: #0A3170;

Brightness & contrast

Relative luminance0.03431WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.45:1
Contrast with white12.45:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#F5CE8F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003972no red cones; affects about 1% of men; ΔE 6.7 from the original
Deuteranopia#00306Fno green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#00414Bno blue cones; rare, and affects men and women equally; ΔE 40.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.45:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.6Midnight blue · ΔE 21.3Rebecca purple · ΔE 32.2Steel blue · ΔE 36.3Slate blue · ΔE 37.1Royal blue · ΔE 38.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#70490A
Analogous#0A6470, #160A70
Triadic#700A31, #31700A
Split complementary#70160A, #64700A
Tetradic#700A64, #70490A, #0A7016

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5691F0
Lighter +30%#2772EC
Lighter +20%#125ACE
Lighter +10%#0E459F
Darker −10%#061D41
Darker −20%#020812
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002F7A
Less saturated −25%#193561

Channel breakdown

R10
G49
B112
Red10 (3.9%)
Green49 (19.2%)
Blue112 (43.9%)
Hue217.06°
Saturation (HSL)83.61%
Lightness23.92%
Dominant channelBlue
Hex per channelR 0A · G 31 · B 70

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Every value on this page was computed from “0a3170” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.