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Colour

#18407C

  • #18407C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18407C is a blue with RGB values 24, 64, 124 and HSL 216°, 68%, 29%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18407C#18407C
HEX#18407C
RGBrgb(24, 64, 124)
RGB (0–1)0.0941, 0.251, 0.4863
RGB percentages9.4%, 25.1%, 48.6%
HSLhsl(216, 67.6%, 29%)
HSV / HSBhsv(216, 80.6%, 48.6%)
CMYK80.6%, 48.4%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,589,372
CSS custom property--colour: #18407C;

Brightness & contrast

Relative luminance0.05316WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.18:1
Contrast with white10.18:1WCAG normal text: AAA
Contrast with black2.06:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#E7BF83

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F467Eno red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#053D7Bno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#004E58no blue cones; rare, and affects men and women equally; ΔE 37.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.18:1WCAG large text: AAA
Contrast with black, large text2.06:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.4Midnight blue · ΔE 27.7Steel blue · ΔE 28.9Rebecca purple · ΔE 35.1Cornflower blue · ΔE 36.1Slate blue · ΔE 37.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.44, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C5418
Analogous#18727C, #22187C
Triadic#7C1840, #407C18
Split complementary#7C2218, #727C18
Tetradic#7C1872, #7C5418, #187C22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7BA5E5
Lighter +30%#5088DD
Lighter +20%#296CD1
Lighter +10%#2056A7
Darker −10%#102A51
Darker −20%#071427
Darker −30%#000000
Darker −40%#000000
More saturated +25%#053C8F
Less saturated −25%#2A446A

Channel breakdown

R24
G64
B124
Red24 (9.4%)
Green64 (25.1%)
Blue124 (48.6%)
Hue216°
Saturation (HSL)67.57%
Lightness29.02%
Dominant channelBlue
Hex per channelR 18 · G 40 · B 7C

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Every value on this page was computed from “18407c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.