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Colour

#18298A

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

#18298A is a blue with RGB values 24, 41, 138 and HSL 231°, 70%, 32%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#18298A#18298A
HEX#18298A
RGBrgb(24, 41, 138)
RGB (0–1)0.0941, 0.1608, 0.5412
RGB percentages9.4%, 16.1%, 54.1%
HSLhsl(231.1, 70.4%, 31.8%)
HSV / HSBhsv(231.1, 82.6%, 54.1%)
CMYK82.6%, 70.3%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,583,498
CSS custom property--colour: #18298A;

Brightness & contrast

Relative luminance0.03615WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.19:1
Contrast with white12.19:1WCAG normal text: AAA
Contrast with black1.72:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#E7D675

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003B8Dno red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#003088no green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#004456no blue cones; rare, and affects men and women equally; ΔE 58.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.19:1WCAG large text: AAA
Contrast with black, large text1.72:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.8Dark slateblue · ΔE 16.6Rebecca purple · ΔE 17.9Indigo · ΔE 20.8Navy · ΔE 21.1Slate blue · ΔE 23.6
Nearest named CSS colourMidnight blue (#191970)ΔE 8.76, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A7918
Analogous#18628A, #40188A
Triadic#8A1829, #298A18
Split complementary#8A4018, #628A18
Tetradic#8A1862, #8A7918, #188A40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8493EA
Lighter +30%#596DE2
Lighter +20%#2D47DB
Lighter +10%#2036B5
Darker −10%#101C5F
Darker −20%#090F33
Darker −30%#010208
Darker −40%#000000
More saturated +25%#041B9E
Less saturated −25%#2C3776

Channel breakdown

R24
G41
B138
Red24 (9.4%)
Green41 (16.1%)
Blue138 (54.1%)
Hue231.05°
Saturation (HSL)70.37%
Lightness31.76%
Dominant channelBlue
Hex per channelR 18 · G 29 · B 8A

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