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Recognised as Colour

#403E4A

  • #403E4A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#403E4A is a blue with RGB values 64, 62, 74 and HSL 250°, 9%, 27%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#403E4A#403E4A
HEX#403E4A
RGBrgb(64, 62, 74)
RGB (0–1)0.251, 0.2431, 0.2902
RGB percentages25.1%, 24.3%, 29%
HSLhsl(250, 8.8%, 26.7%)
HSV / HSBhsv(250, 16.2%, 29%)
CMYK13.5%, 16.2%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,210,250
CSS custom property--colour: #403E4A;

Brightness & contrast

Relative luminance0.0503WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.47:1
Contrast with white10.47:1WCAG normal text: AAA
Contrast with black2.01:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#BFC1B5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C404Bno red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#3C3F4Ano green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#3E4042no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.47:1WCAG large text: AAA
Contrast with black, large text2.01:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.4Dim grey · ΔE 19.3Slate grey · ΔE 26.9Gray · ΔE 27.9Black · ΔE 28Light slate grey · ΔE 30
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#484A3E
Analogous#3E424A, #463E4A
Triadic#4A403E, #3E4A40
Split complementary#4A463E, #424A3E
Tetradic#4A3E42, #484A3E, #3E4A46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5A3B2
Lighter +30%#8A879A
Lighter +20%#706D82
Lighter +10%#585566
Darker −10%#28272E
Darker −20%#101013
Darker −30%#000000
Darker −40%#000000
More saturated +25%#352D5B
Less saturated −25%#444444

Channel breakdown

R64
G62
B74
Red64 (25.1%)
Green62 (24.3%)
Blue74 (29%)
Hue250°
Saturation (HSL)8.82%
Lightness26.67%
Dominant channelBlue
Hex per channelR 40 · G 3E · B 4A

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Every value on this page was computed from “403e4a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.