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Colour

#18376E

  • #18376E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#18376E is a blue with RGB values 24, 55, 110 and HSL 218°, 64%, 26%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#18376E#18376E
HEX#18376E
RGBrgb(24, 55, 110)
RGB (0–1)0.0941, 0.2157, 0.4314
RGB percentages9.4%, 21.6%, 43.1%
HSLhsl(218.4, 64.2%, 26.3%)
HSV / HSBhsv(218.4, 78.2%, 43.1%)
CMYK78.2%, 50%, 0%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,587,054
CSS custom property--colour: #18376E;

Brightness & contrast

Relative luminance0.04052WCAG 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 11.6:1
Contrast with white11.6:1WCAG normal text: AAA
Contrast with black1.81:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#E7C891

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#193D70no red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#02356Dno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#00444Dno blue cones; rare, and affects men and women equally; ΔE 35.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.6:1WCAG large text: AAA
Contrast with black, large text1.81:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.9Midnight blue · ΔE 27.3Steel blue · ΔE 32Rebecca purple · ΔE 36.2Dark slate grey · ΔE 39Slate grey · ΔE 39.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.87, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E4F18
Analogous#18626E, #24186E
Triadic#6E1837, #376E18
Split complementary#6E2418, #626E18
Tetradic#6E1862, #6E4F18, #186E24

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#729AE0
Lighter +30%#487CD7
Lighter +20%#2A61C2
Lighter +10%#214C98
Darker −10%#0F2244
Darker −20%#060D1A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07327F
Less saturated −25%#293C5D

Channel breakdown

R24
G55
B110
Red24 (9.4%)
Green55 (21.6%)
Blue110 (43.1%)
Hue218.37°
Saturation (HSL)64.18%
Lightness26.27%
Dominant channelBlue
Hex per channelR 18 · G 37 · B 6E

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Every value on this page was computed from “18376e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.