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Colour

#18298F

  • #18298F
  • Blue
  • Dark
  • Nearest: Midnight blue

#18298F is a blue with RGB values 24, 41, 143 and HSL 231°, 71%, 33%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18298F#18298F
HEX#18298F
RGBrgb(24, 41, 143)
RGB (0–1)0.0941, 0.1608, 0.5608
RGB percentages9.4%, 16.1%, 56.1%
HSLhsl(231.4, 71.3%, 32.7%)
HSV / HSBhsv(231.4, 83.2%, 56.1%)
CMYK83.2%, 71.3%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,583,503
CSS custom property--colour: #18298F;

Brightness & contrast

Relative luminance0.03763WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.98:1
Contrast with white11.98:1WCAG normal text: AAA
Contrast with black1.75:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#E7D670

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003C92no red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#00318Dno green cones; the most common form, about 1% of men; ΔE 8.3 from the original
Tritanopia#004659no blue cones; rare, and affects men and women equally; ΔE 60.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.98:1WCAG large text: AAA
Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.8Rebecca purple · ΔE 17.6Dark slateblue · ΔE 18.8Navy · ΔE 19Indigo · ΔE 19.4Dark blue · ΔE 22.2
Nearest named CSS colourMidnight blue (#191970)ΔE 10.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F7E18
Analogous#18648F, #43188F
Triadic#8F1829, #298F18
Split complementary#8F4318, #648F18
Tetradic#8F1864, #8F7E18, #188F42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8896EB
Lighter +30%#5C70E4
Lighter +20%#3149DC
Lighter +10%#1F36BB
Darker −10%#111C63
Darker −20%#091038
Darker −30%#02030C
Darker −40%#000000
More saturated +25%#031AA4
Less saturated −25%#2D387A

Channel breakdown

R24
G41
B143
Red24 (9.4%)
Green41 (16.1%)
Blue143 (56.1%)
Hue231.43°
Saturation (HSL)71.26%
Lightness32.75%
Dominant channelBlue
Hex per channelR 18 · G 29 · B 8F

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Every value on this page was computed from “18298f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.