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Colour

#40494B

  • #40494B
  • Grey
  • Dark
  • Nearest: Dark slate grey

#40494B is a grey with RGB values 64, 73, 75 and HSL 191°, 8%, 27%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#40494B#40494B
HEX#40494B
RGBrgb(64, 73, 75)
RGB (0–1)0.251, 0.2863, 0.2941
RGB percentages25.1%, 28.6%, 29.4%
HSLhsl(190.9, 7.9%, 27.3%)
HSV / HSBhsv(190.9, 14.7%, 29.4%)
CMYK14.7%, 2.7%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,213,067
CSS custom property--colour: #40494B;

Brightness & contrast

Relative luminance0.06363WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.24:1
Contrast with white9.24:1WCAG normal text: AAA
Contrast with black2.27:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#BFB6B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#47484Bno red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#45474Bno green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#3D4A4Ano blue cones; rare, and affects men and women equally; ΔE 2.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.24:1WCAG large text: AAA
Contrast with black, large text2.27:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 8.7Dim grey · ΔE 14.7Gray · ΔE 23.6Slate grey · ΔE 24Light slate grey · ΔE 27.1Black · ΔE 30.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 8.73, clearly different but related
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B4240
Analogous#404B48, #40434B
Triadic#4B4049, #494B40
Split complementary#4B4043, #4B4840
Tetradic#48404B, #4B4240, #434B40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5B0B2
Lighter +30%#89979B
Lighter +20%#6F7F82
Lighter +10%#576467
Darker −10%#292E2F
Darker −20%#111314
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2F545C
Less saturated −25%#464646

Channel breakdown

R64
G73
B75
Red64 (25.1%)
Green73 (28.6%)
Blue75 (29.4%)
Hue190.91°
Saturation (HSL)7.91%
Lightness27.25%
Dominant channelBlue
Hex per channelR 40 · G 49 · B 4B

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Every value on this page was computed from “40494b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.