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Colour

#18448F

  • #18448F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18448F is a blue with RGB values 24, 68, 143 and HSL 218°, 71%, 33%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18448F#18448F
HEX#18448F
RGBrgb(24, 68, 143)
RGB (0–1)0.0941, 0.2667, 0.5608
RGB percentages9.4%, 26.7%, 56.1%
HSLhsl(217.8, 71.3%, 32.7%)
HSV / HSBhsv(217.8, 83.2%, 56.1%)
CMYK83.2%, 52.4%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,590,415
CSS custom property--colour: #18448F;

Brightness & contrast

Relative luminance0.06312WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.28:1
Contrast with white9.28:1WCAG normal text: AAA
Contrast with black2.26:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#E7BB70

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#124D92no red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#00428Eno green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#005663no blue cones; rare, and affects men and women equally; ΔE 44.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.28:1WCAG large text: AAA
Contrast with black, large text2.26:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.2Midnight blue · ΔE 22.8Rebecca purple · ΔE 28.6Royal blue · ΔE 28.9Slate blue · ΔE 29Steel blue · ΔE 32
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F6318
Analogous#187F8F, #28188F
Triadic#8F1844, #448F18
Split complementary#8F2818, #7F8F18
Tetradic#8F187F, #8F6318, #188F28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88ADEB
Lighter +30%#5C8EE4
Lighter +20%#3170DC
Lighter +10%#1F59BB
Darker −10%#112F63
Darker −20%#091A38
Darker −30%#02060C
Darker −40%#000000
More saturated +25%#033FA4
Less saturated −25%#2D497A

Channel breakdown

R24
G68
B143
Red24 (9.4%)
Green68 (26.7%)
Blue143 (56.1%)
Hue217.82°
Saturation (HSL)71.26%
Lightness32.75%
Dominant channelBlue
Hex per channelR 18 · G 44 · B 8F

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Every value on this page was computed from “18448f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.