Colour

#2F3139

#2F3139
Blue
Dark
Nearest: Dark slate grey

#2F3139 is a blue with RGB values 47, 49, 57 and HSL 228°, 10%, 20%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2F3139#2F3139

HEX#2F3139

RGBrgb(47, 49, 57)

RGB (0–1)0.1843, 0.1922, 0.2235

RGB percentages18.4%, 19.2%, 22.4%

HSLhsl(228, 9.6%, 20.4%)

HSV / HSBhsv(228, 17.5%, 22.4%)

CMYK17.5%, 14%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,092,793

CSS custom property--colour: #2F3139;

Brightness & contrast

Relative luminance0.03096WCAG 2.x, 0 is black and 1 is white

Perceived brightness49.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.97:1

Contrast with white12.97:1WCAG normal text: AAA

Contrast with black1.62:1WCAG normal text: Fail

Greyscale equivalent#313131

Inverted#D0CEC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2F3239no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#2E3139no green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#2D3234no blue cones; rare, and affects men and women equally; ΔE 4.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text12.97:1WCAG large text: AAA

Contrast with black, large text1.62:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.9 Black · ΔE 21.1 Dim grey · ΔE 24.6 Slate grey · ΔE 33 Gray · ΔE 33.6 Light slate grey · ΔE 36.1

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.91, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#39372F

Analogous#2F3639, #322F39

Triadic#392F31, #31392F

Split complementary#39322F, #36392F

Tetradic#392F36, #39372F, #2F3932

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#9094A4

Lighter +30%#74798D

Lighter +20%#5D6171

Lighter +10%#464955

Darker −10%#18191D

Darker −20%#010101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#222946

Less saturated −25%#343434

Channel breakdown

R47

G49

B57

Red47 (18.4%)

Green49 (19.2%)

Blue57 (22.4%)

Hue228°

Saturation (HSL)9.62%

Lightness20.39%

Dominant channelBlue

Hex per channelR 2F · G 31 · B 39

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#2F3139

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

Nerdulate something else