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Recognised as Colour

#18417E

  • #18417E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18417E is a blue with RGB values 24, 65, 126 and HSL 216°, 68%, 29%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18417E#18417E
HEX#18417E
RGBrgb(24, 65, 126)
RGB (0–1)0.0941, 0.2549, 0.4941
RGB percentages9.4%, 25.5%, 49.4%
HSLhsl(215.9, 68%, 29.4%)
HSV / HSBhsv(215.9, 81%, 49.4%)
CMYK81%, 48.4%, 0%, 50.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,589,630
CSS custom property--colour: #18417E;

Brightness & contrast

Relative luminance0.05481WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.02:1
Contrast with white10.02:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#E7BE81

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#204780no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#043E7Dno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#005059no blue cones; rare, and affects men and women equally; ΔE 38.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.02:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.1Midnight blue · ΔE 27.6Steel blue · ΔE 28.7Rebecca purple · ΔE 34.8Cornflower blue · ΔE 35.5Slate blue · ΔE 37
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.12, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7E5518
Analogous#18747E, #22187E
Triadic#7E1841, #417E18
Split complementary#7E2218, #747E18
Tetradic#7E1874, #7E5518, #187E22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7CA7E6
Lighter +30%#518ADE
Lighter +20%#286DD4
Lighter +10%#2057A9
Darker −10%#102B53
Darker −20%#081528
Darker −30%#000000
Darker −40%#000000
More saturated +25%#053D91
Less saturated −25%#2B456B

Channel breakdown

R24
G65
B126
Red24 (9.4%)
Green65 (25.5%)
Blue126 (49.4%)
Hue215.88°
Saturation (HSL)68%
Lightness29.41%
Dominant channelBlue
Hex per channelR 18 · G 41 · B 7E

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Every value on this page was computed from “18417e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.