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Recognised as Colour

#17418F

  • #17418F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#17418F is a blue with RGB values 23, 65, 143 and HSL 219°, 72%, 33%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#17418F#17418F
HEX#17418F
RGBrgb(23, 65, 143)
RGB (0–1)0.0902, 0.2549, 0.5608
RGB percentages9%, 25.5%, 56.1%
HSLhsl(219, 72.3%, 32.5%)
HSV / HSBhsv(219, 83.9%, 56.1%)
CMYK83.9%, 54.5%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,524,111
CSS custom property--colour: #17418F;

Brightness & contrast

Relative luminance0.05946WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.59:1
Contrast with white9.59:1WCAG normal text: AAA
Contrast with black2.19:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#E8BE70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#024B92no red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#00408Dno green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#005461no blue cones; rare, and affects men and women equally; ΔE 47.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.59:1WCAG large text: AAA
Contrast with black, large text2.19:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11Midnight blue · ΔE 20.5Rebecca purple · ΔE 26.7Slate blue · ΔE 27.5Royal blue · ΔE 27.7Medium purple · ΔE 32.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F6517
Analogous#177D8F, #29178F
Triadic#8F1741, #418F17
Split complementary#8F2917, #7D8F17
Tetradic#8F177D, #8F6517, #178F29

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#86AAEC
Lighter +30%#5A8BE5
Lighter +20%#2F6CDD
Lighter +10%#1E55BB
Darker −10%#102D63
Darker −20%#091937
Darker −30%#02050B
Darker −40%#000000
More saturated +25%#023BA4
Less saturated −25%#2C477A

Channel breakdown

R23
G65
B143
Red23 (9%)
Green65 (25.5%)
Blue143 (56.1%)
Hue219°
Saturation (HSL)72.29%
Lightness32.55%
Dominant channelBlue
Hex per channelR 17 · G 41 · B 8F

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Every value on this page was computed from “17418f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.