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Recognised as Colour

#3A3F49

  • #3A3F49
  • Blue
  • Dark
  • Nearest: Dark slate grey

#3A3F49 is a blue with RGB values 58, 63, 73 and HSL 220°, 11%, 26%. It is a dark colour, so white text on it reaches 10.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3A3F49#3A3F49
HEX#3A3F49
RGBrgb(58, 63, 73)
RGB (0–1)0.2275, 0.2471, 0.2863
RGB percentages22.7%, 24.7%, 28.6%
HSLhsl(220, 11.5%, 25.7%)
HSV / HSBhsv(220, 20.5%, 28.6%)
CMYK20.5%, 13.7%, 0%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,817,289
CSS custom property--colour: #3A3F49;

Brightness & contrast

Relative luminance0.04936WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.57:1
Contrast with white10.57:1WCAG normal text: AAA
Contrast with black1.99:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#C5C0B6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C4049no red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#3B3E49no green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#364142no 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 text10.57:1WCAG large text: AAA
Contrast with black, large text1.99:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 13.4Dim grey · ΔE 19.1Slate grey · ΔE 26.7Black · ΔE 27.4Gray · ΔE 27.9Light slate grey · ΔE 29.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 13.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#49443A
Analogous#3A4649, #3D3A49
Triadic#493A3F, #3F493A
Split complementary#493C3A, #46493A
Tetradic#493A46, #49443A, #3A493C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DA4B2
Lighter +30%#818A9B
Lighter +20%#677082
Lighter +10%#515865
Darker −10%#23262D
Darker −20%#0D0E10
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2A3A59
Less saturated −25%#424242

Channel breakdown

R58
G63
B73
Red58 (22.7%)
Green63 (24.7%)
Blue73 (28.6%)
Hue220°
Saturation (HSL)11.45%
Lightness25.69%
Dominant channelBlue
Hex per channelR 3A · G 3F · B 49

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Every value on this page was computed from “3a3f49” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.