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Recognised as Colour

#18445D

  • #18445D
  • Blue
  • Dark
  • Nearest: Dark slate grey

#18445D is a blue with RGB values 24, 68, 93 and HSL 202°, 59%, 23%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#18445D#18445D
HEX#18445D
RGBrgb(24, 68, 93)
RGB (0–1)0.0941, 0.2667, 0.3647
RGB percentages9.4%, 26.7%, 36.5%
HSLhsl(201.7, 59%, 22.9%)
HSV / HSBhsv(201.7, 74.2%, 36.5%)
CMYK74.2%, 26.9%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,590,365
CSS custom property--colour: #18445D;

Brightness & contrast

Relative luminance0.05119WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.38:1
Contrast with white10.38:1WCAG normal text: AAA
Contrast with black2.02:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#E7BBA2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#38445Eno red cones; affects about 1% of men; ΔE 8.9 from the original
Deuteranopia#2F3D5Dno green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#004A4Dno blue cones; rare, and affects men and women equally; ΔE 17.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.38:1WCAG large text: AAA
Contrast with black, large text2.02:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.1Dim grey · ΔE 26.5Slate grey · ΔE 27.4Steel blue · ΔE 28.6Light slate grey · ΔE 30.2Teal · ΔE 33.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.07, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5D3118
Analogous#185D54, #18215D
Triadic#5D1844, #445D18
Split complementary#5D1822, #5D5418
Tetradic#53185D, #5D3118, #215D18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#69B0D8
Lighter +30%#409ACE
Lighter +20%#2D7FAE
Lighter +10%#226286
Darker −10%#0E2634
Darker −20%#03090C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#09486C
Less saturated −25%#27404E

Channel breakdown

R24
G68
B93
Red24 (9.4%)
Green68 (26.7%)
Blue93 (36.5%)
Hue201.74°
Saturation (HSL)58.97%
Lightness22.94%
Dominant channelBlue
Hex per channelR 18 · G 44 · B 5D

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Every value on this page was computed from “18445d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.