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Recognised as Colour

#40425D

  • #40425D
  • Blue
  • Dark
  • Nearest: Dark slate grey

#40425D is a blue with RGB values 64, 66, 93 and HSL 236°, 18%, 31%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#40425D#40425D
HEX#40425D
RGBrgb(64, 66, 93)
RGB (0–1)0.251, 0.2588, 0.3647
RGB percentages25.1%, 25.9%, 36.5%
HSLhsl(235.9, 18.5%, 30.8%)
HSV / HSBhsv(235.9, 31.2%, 36.5%)
CMYK31.2%, 29%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,211,293
CSS custom property--colour: #40425D;

Brightness & contrast

Relative luminance0.05777WCAG 2.x, 0 is black and 1 is white
Perceived brightness69 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.74:1
Contrast with white9.74:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#BFBDA2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A455Eno red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#39435Cno green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#39474Bno blue cones; rare, and affects men and women equally; ΔE 16.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.74:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 22Dim grey · ΔE 23.4Slate grey · ΔE 26Light slate grey · ΔE 28.8Gray · ΔE 30.3Steel blue · ΔE 30.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 22.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5D5B40
Analogous#40515D, #4C405D
Triadic#5D4042, #425D40
Split complementary#5D4C40, #515D40
Tetradic#5D4051, #5D5B40, #405D4C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A7A9C2
Lighter +30%#898BAD
Lighter +20%#6A6E99
Lighter +10%#55577B
Darker −10%#2B2D3F
Darker −20%#161721
Darker −30%#020202
Darker −40%#000000
More saturated +25%#2C3171
Less saturated −25%#4F4F4F

Channel breakdown

R64
G66
B93
Red64 (25.1%)
Green66 (25.9%)
Blue93 (36.5%)
Hue235.86°
Saturation (HSL)18.47%
Lightness30.78%
Dominant channelBlue
Hex per channelR 40 · G 42 · B 5D

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Every value on this page was computed from “40425d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.