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Recognised as Colour

#40505E

  • #40505E
  • Blue
  • Dark
  • Nearest: Dark slate grey

#40505E is a blue with RGB values 64, 80, 94 and HSL 208°, 19%, 31%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#40505E#40505E
HEX#40505E
RGBrgb(64, 80, 94)
RGB (0–1)0.251, 0.3137, 0.3686
RGB percentages25.1%, 31.4%, 36.9%
HSLhsl(208, 19%, 31%)
HSV / HSBhsv(208, 31.9%, 36.9%)
CMYK31.9%, 14.9%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,214,878
CSS custom property--colour: #40505E;

Brightness & contrast

Relative luminance0.07635WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.31:1
Contrast with white8.31:1WCAG normal text: AAA
Contrast with black2.53:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#BFAFA1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4A505Fno red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#474D5Eno green cones; the most common form, about 1% of men; ΔE 4.4 from the original
Tritanopia#375354no blue cones; rare, and affects men and women equally; ΔE 9.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.31:1WCAG large text: AAA
Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.4Dim grey · ΔE 15.4Slate grey · ΔE 19.6Light slate grey · ΔE 22.7Gray · ΔE 22.9Steel blue · ΔE 29.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.44, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E4E40
Analogous#405E5D, #40415E
Triadic#5E4050, #505E40
Split complementary#5E4041, #5E5D40
Tetradic#5D405E, #5E4E40, #415E40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7B6C3
Lighter +30%#899DAE
Lighter +20%#6A849A
Lighter +10%#556A7C
Darker −10%#2B3640
Darker −20%#171C21
Darker −30%#020303
Darker −40%#000000
More saturated +25%#2C5172
Less saturated −25%#4F4F4F

Channel breakdown

R64
G80
B94
Red64 (25.1%)
Green80 (31.4%)
Blue94 (36.9%)
Hue208°
Saturation (HSL)18.99%
Lightness30.98%
Dominant channelBlue
Hex per channelR 40 · G 50 · B 5E

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Every value on this page was computed from “40505e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.