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Colour

#42445C

  • #42445C
  • Blue
  • Dark
  • Nearest: Dark slate grey

#42445C is a blue with RGB values 66, 68, 92 and HSL 235°, 16%, 31%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#42445C#42445C
HEX#42445C
RGBrgb(66, 68, 92)
RGB (0–1)0.2588, 0.2667, 0.3608
RGB percentages25.9%, 26.7%, 36.1%
HSLhsl(235.4, 16.5%, 31%)
HSV / HSBhsv(235.4, 28.3%, 36.1%)
CMYK28.3%, 26.1%, 0%, 63.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,342,876
CSS custom property--colour: #42445C;

Brightness & contrast

Relative luminance0.06065WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.49:1
Contrast with white9.49:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#454545
Inverted#BDBBA3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D475Dno red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#3C455Bno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#3C484Cno blue cones; rare, and affects men and women equally; ΔE 13.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.49:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.2Dim grey · ΔE 21.4Slate grey · ΔE 24.7Light slate grey · ΔE 27.6Gray · ΔE 28.5Steel blue · ΔE 30.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C5A42
Analogous#42515C, #4D425C
Triadic#5C4244, #445C42
Split complementary#5C4D42, #515C42
Tetradic#5C4251, #5C5A42, #425C4D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9ABC1
Lighter +30%#8B8EAC
Lighter +20%#6D7197
Lighter +10%#575A7A
Darker −10%#2D2E3E
Darker −20%#171821
Darker −30%#020203
Darker −40%#000000
More saturated +25%#2E3370
Less saturated −25%#4F4F4F

Channel breakdown

R66
G68
B92
Red66 (25.9%)
Green68 (26.7%)
Blue92 (36.1%)
Hue235.38°
Saturation (HSL)16.46%
Lightness30.98%
Dominant channelBlue
Hex per channelR 42 · G 44 · B 5C

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Every value on this page was computed from “42445c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.