Colour

#27303F

#27303F
Blue
Dark
Nearest: Dark slate grey

#27303F is a blue with RGB values 39, 48, 63 and HSL 218°, 24%, 20%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#27303F#27303F

HEX#27303F

RGBrgb(39, 48, 63)

RGB (0–1)0.1529, 0.1882, 0.2471

RGB percentages15.3%, 18.8%, 24.7%

HSLhsl(217.5, 23.5%, 20%)

HSV / HSBhsv(217.5, 38.1%, 24.7%)

CMYK38.1%, 23.8%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,568,255

CSS custom property--colour: #27303F;

Brightness & contrast

Relative luminance0.02904WCAG 2.x, 0 is black and 1 is white

Perceived brightness47.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.28:1

Contrast with white13.28:1WCAG normal text: AAA

Contrast with black1.58:1WCAG normal text: Fail

Greyscale equivalent#2F2F2F

Inverted#D8CFC0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2B3140no red cones; affects about 1% of men; ΔE 1.3 from the original

Deuteranopia#282F3Fno green cones; the most common form, about 1% of men; ΔE 1.1 from the original

Tritanopia#203335no blue cones; rare, and affects men and women equally; ΔE 10.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text13.28:1WCAG large text: AAA

Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.3 Black · ΔE 22.4 Dim grey · ΔE 27 Slate grey · ΔE 33.3 Gray · ΔE 35.6 Light slate grey · ΔE 36.4

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.27, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3F3627

Analogous#273C3F, #2A273F

Triadic#3F2730, #303F27

Split complementary#3F2A27, #3C3F27

Tetradic#3F273C, #3F3627, #273F2A

Tints, shades & saturation

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

Lighter +40%#8193B1

Lighter +30%#62789E

Lighter +20%#4E607E

Lighter +10%#3B485F

Darker −10%#14181F

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#1A2D4C

Less saturated −25%#333333

Channel breakdown

R39

G48

B63

Red39 (15.3%)

Green48 (18.8%)

Blue63 (24.7%)

Hue217.5°

Saturation (HSL)23.53%

Lightness20%

Dominant channelBlue

Hex per channelR 27 · G 30 · B 3F

Keep nerding

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#27303F

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

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