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Recognised as Colour

#3A404A

  • #3A404A
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3A404A is a blue with RGB values 58, 64, 74 and HSL 218°, 12%, 26%. It is a dark colour, so white text on it reaches 10.4:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3A404A#3A404A
HEX#3A404A
RGBrgb(58, 64, 74)
RGB (0–1)0.2275, 0.251, 0.2902
RGB percentages22.7%, 25.1%, 29%
HSLhsl(217.5, 12.1%, 25.9%)
HSV / HSBhsv(217.5, 21.6%, 29%)
CMYK21.6%, 13.5%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,817,546
CSS custom property--colour: #3A404A;

Brightness & contrast

Relative luminance0.05061WCAG 2.x, 0 is black and 1 is white
Perceived brightness63.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.44:1
Contrast with white10.44:1WCAG normal text: AAA
Contrast with black2.01:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#C5BFB5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D404Ano red cones; affects about 1% of men; ΔE 1.3 from the original
Deuteranopia#3B3F4Ano green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#364243no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.44:1WCAG large text: AAA
Contrast with black, large text2.01:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 12.9Dim grey · ΔE 18.8Slate grey · ΔE 26.3Gray · ΔE 27.6Black · ΔE 27.8Light slate grey · ΔE 29.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 12.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4A443A
Analogous#3A484A, #3C3A4A
Triadic#4A3A40, #404A3A
Split complementary#4A3C3A, #484A3A
Tetradic#4A3A48, #4A443A, #3A4A3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DA5B3
Lighter +30%#818B9C
Lighter +20%#677183
Lighter +10%#505967
Darker −10%#24272D
Darker −20%#0D0F11
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2A3C5B
Less saturated −25%#424242

Channel breakdown

R58
G64
B74
Red58 (22.7%)
Green64 (25.1%)
Blue74 (29%)
Hue217.5°
Saturation (HSL)12.12%
Lightness25.88%
Dominant channelBlue
Hex per channelR 3A · G 40 · B 4A

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Every value on this page was computed from “3a404a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.