Colour

#28364E

#28364E
Blue
Dark
Nearest: Dark slate grey

#28364E is a blue with RGB values 40, 54, 78 and HSL 218°, 32%, 23%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#28364E#28364E

HEX#28364E

RGBrgb(40, 54, 78)

RGB (0–1)0.1569, 0.2118, 0.3059

RGB percentages15.7%, 21.2%, 30.6%

HSLhsl(217.9, 32.2%, 23.1%)

HSV / HSBhsv(217.9, 48.7%, 30.6%)

CMYK48.7%, 30.8%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,635,342

CSS custom property--colour: #28364E;

Brightness & contrast

Relative luminance0.0364WCAG 2.x, 0 is black and 1 is white

Perceived brightness53.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.15:1

Contrast with white12.15:1WCAG normal text: AAA

Contrast with black1.73:1WCAG normal text: Fail

Greyscale equivalent#353535

Inverted#D7C9B1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2D384Fno red cones; affects about 1% of men; ΔE 1.6 from the original

Deuteranopia#29344Dno green cones; the most common form, about 1% of men; ΔE 1.5 from the original

Tritanopia#1A3B3Eno blue cones; rare, and affects men and women equally; ΔE 16.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text12.15:1WCAG large text: AAA

Contrast with black, large text1.73:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.5 Dim grey · ΔE 27.5 Black · ΔE 27.9 Slate grey · ΔE 31.2 Light slate grey · ΔE 34.1 Steel blue · ΔE 34.4

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.54, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4E4028

Analogous#28494E, #2D284E

Triadic#4E2836, #364E28

Split complementary#4E2D28, #494E28

Tetradic#4E2849, #4E4028, #284E2D

Tints, shades & saturation

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

Lighter +40%#8399BF

Lighter +30%#617DAE

Lighter +20%#4B6591

Lighter +10%#394D70

Darker −10%#171F2C

Darker −20%#05070B

Darker −30%#000000

Darker −40%#000000

More saturated +25%#19325D

Less saturated −25%#373A3F

Channel breakdown

R40

G54

B78

Red40 (15.7%)

Green54 (21.2%)

Blue78 (30.6%)

Hue217.89°

Saturation (HSL)32.2%

Lightness23.14%

Dominant channelBlue

Hex per channelR 28 · G 36 · B 4E

Keep nerding

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#28364E

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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