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Recognised as Colour

#39454B

  • #39454B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#39454B is a blue with RGB values 57, 69, 75 and HSL 200°, 14%, 26%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#39454B#39454B
HEX#39454B
RGBrgb(57, 69, 75)
RGB (0–1)0.2235, 0.2706, 0.2941
RGB percentages22.4%, 27.1%, 29.4%
HSLhsl(200, 13.6%, 25.9%)
HSV / HSBhsv(200, 24%, 29.4%)
CMYK24%, 8%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,753,291
CSS custom property--colour: #39454B;

Brightness & contrast

Relative luminance0.05634WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.87:1
Contrast with white9.87:1WCAG normal text: AAA
Contrast with black2.13:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#C6BAB4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#42444Bno red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#3F424Bno green cones; the most common form, about 1% of men; ΔE 4.3 from the original
Tritanopia#344747no blue cones; rare, and affects men and women equally; ΔE 5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.87:1WCAG large text: AAA
Contrast with black, large text2.13:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9Dim grey · ΔE 17.1Slate grey · ΔE 25Gray · ΔE 25.9Light slate grey · ΔE 28.1Black · ΔE 29.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.02, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B3F39
Analogous#394B48, #393C4B
Triadic#4B3945, #454B39
Split complementary#4B393C, #4B4839
Tetradic#48394B, #4B3F39, #3C4B39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CACB4
Lighter +30%#7F949E
Lighter +20%#657A85
Lighter +10%#4F6068
Darker −10%#232A2E
Darker −20%#0D1011
Darker −30%#000000
Darker −40%#000000
More saturated +25%#294A5C
Less saturated −25%#424242

Channel breakdown

R57
G69
B75
Red57 (22.4%)
Green69 (27.1%)
Blue75 (29.4%)
Hue200°
Saturation (HSL)13.64%
Lightness25.88%
Dominant channelBlue
Hex per channelR 39 · G 45 · B 4B

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Every value on this page was computed from “39454b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.