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Colour

#424A4B

  • #424A4B
  • Grey
  • Dark
  • Nearest: Dark slate grey

#424A4B is a grey with RGB values 66, 74, 75 and HSL 187°, 6%, 28%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#424A4B#424A4B
HEX#424A4B
RGBrgb(66, 74, 75)
RGB (0–1)0.2588, 0.2902, 0.2941
RGB percentages25.9%, 29%, 29.4%
HSLhsl(186.7, 6.4%, 27.6%)
HSV / HSBhsv(186.7, 12%, 29.4%)
CMYK12%, 1.3%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,344,395
CSS custom property--colour: #424A4B;

Brightness & contrast

Relative luminance0.06564WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.08:1
Contrast with white9.08:1WCAG normal text: AAA
Contrast with black2.31:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#BDB5B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#49494Bno red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#47484Bno green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#404B4Ano blue cones; rare, and affects men and women equally; ΔE 1.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.08:1WCAG large text: AAA
Contrast with black, large text2.31:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9Dim grey · ΔE 14Gray · ΔE 23.1Slate grey · ΔE 23.8Light slate grey · ΔE 26.8Black · ΔE 31
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.97, clearly different but related
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B4342
Analogous#424B48, #42464B
Triadic#4B424A, #4A4B42
Split complementary#4B4246, #4B4842
Tetradic#48424B, #4B4342, #464B42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7B1B2
Lighter +30%#8C989A
Lighter +20%#728081
Lighter +10%#5A6566
Darker −10%#2A2F30
Darker −20%#121415
Darker −30%#000000
Darker −40%#000000
More saturated +25%#30585D
Less saturated −25%#474747

Channel breakdown

R66
G74
B75
Red66 (25.9%)
Green74 (29%)
Blue75 (29.4%)
Hue186.67°
Saturation (HSL)6.38%
Lightness27.65%
Dominant channelBlue
Hex per channelR 42 · G 4A · B 4B

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Every value on this page was computed from “424a4b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.