Colour

#42454B

#42454B
Grey
Dark
Nearest: Dark slate grey

#42454B is a grey with RGB values 66, 69, 75 and HSL 220°, 6%, 28%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#42454B#42454B

HEX#42454B

RGBrgb(66, 69, 75)

RGB (0–1)0.2588, 0.2706, 0.2941

RGB percentages25.9%, 27.1%, 29.4%

HSLhsl(220, 6.4%, 27.6%)

HSV / HSBhsv(220, 12%, 29.4%)

CMYK12%, 8%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,343,115

CSS custom property--colour: #42454B;

Brightness & contrast

Relative luminance0.05922WCAG 2.x, 0 is black and 1 is white

Perceived brightness68.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.61:1

Contrast with white9.61:1WCAG normal text: AAA

Contrast with black2.18:1WCAG normal text: Fail

Greyscale equivalent#454545

Inverted#BDBAB4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#43454Bno red cones; affects about 1% of men; ΔE 0.4 from the original

Deuteranopia#42444Bno green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#404647no blue cones; rare, and affects men and women equally; ΔE 3.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text9.61:1WCAG large text: AAA

Contrast with black, large text2.18:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 12.1 Dim grey · ΔE 15.7 Slate grey · ΔE 24.6 Gray · ΔE 24.7 Light slate grey · ΔE 27.7 Black · ΔE 29.5

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.08, a distinctly different colour

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#4B4842

Analogous#424A4B, #44424B

Triadic#4B4245, #454B42

Split complementary#4B4442, #4A4B42

Tetradic#4B424A, #4B4842, #424B44

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#A7ABB2

Lighter +30%#8C919A

Lighter +20%#727781

Lighter +10%#5A5E66

Darker −10%#2A2C30

Darker −20%#121315

Darker −30%#000000

Darker −40%#000000

More saturated +25%#303F5D

Less saturated −25%#474747

Channel breakdown

R66

G69

B75

Red66 (25.9%)

Green69 (27.1%)

Blue75 (29.4%)

Hue220°

Saturation (HSL)6.38%

Lightness27.65%

Dominant channelBlue

Hex per channelR 42 · G 45 · B 4B

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#42454B

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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