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Recognised as Colour

#1864AA

  • #1864AA
  • Blue
  • Dark
  • Nearest: Steel blue

#1864AA is a blue with RGB values 24, 100, 170 and HSL 209°, 75%, 38%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1864AA#1864AA
HEX#1864AA
RGBrgb(24, 100, 170)
RGB (0–1)0.0941, 0.3922, 0.6667
RGB percentages9.4%, 39.2%, 66.7%
HSLhsl(208.8, 75.3%, 38%)
HSV / HSBhsv(208.8, 85.9%, 66.7%)
CMYK85.9%, 41.2%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,598,634
CSS custom property--colour: #1864AA;

Brightness & contrast

Relative luminance0.12211WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.1:1
Contrast with white6.1:1WCAG normal text: AA
Contrast with black3.44:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#E79B55

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4169ADno red cones; affects about 1% of men; ΔE 5.7 from the original
Deuteranopia#285CA9no green cones; the most common form, about 1% of men; ΔE 7.2 from the original
Tritanopia#00757Eno blue cones; rare, and affects men and women equally; ΔE 41.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.1:1WCAG large text: AAA
Contrast with black, large text3.44:1WCAG large text: AA

Named colours

Steel blue · ΔE 17.8Cornflower blue · ΔE 21.8Dark slateblue · ΔE 24.5Dodgerblue · ΔE 27.2Royal blue · ΔE 31.6Slate blue · ΔE 35.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 17.84, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA5E18
Analogous#18AAA7, #181BAA
Triadic#AA1864, #64AA18
Split complementary#AA181B, #AAA718
Tetradic#A718AA, #AA5E18, #1BAA18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DC9F1
Lighter +30%#70B0EB
Lighter +20%#4397E5
Lighter +10%#1E7ED7
Darker −10%#124A7D
Darker −20%#0B2F51
Darker −30%#051524
Darker −40%#000000
More saturated +25%#0065C2
Less saturated −25%#306392

Channel breakdown

R24
G100
B170
Red24 (9.4%)
Green100 (39.2%)
Blue170 (66.7%)
Hue208.77°
Saturation (HSL)75.26%
Lightness38.04%
Dominant channelBlue
Hex per channelR 18 · G 64 · B AA

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Every value on this page was computed from “1864aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.