Colour

#00383B

#00383B
Cyan
Dark
Nearest: Dark slate grey

#00383B is a cyan with RGB values 0, 56, 59 and HSL 183°, 100%, 12%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#00383B#00383B

HEX#00383B

RGBrgb(0, 56, 59)

RGB (0–1)0, 0.2196, 0.2314

RGB percentages0%, 22%, 23.1%

HSLhsl(183.1, 100%, 11.6%)

HSV / HSBhsv(183.1, 100%, 23.1%)

CMYK100%, 5.1%, 0%, 76.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,395

CSS custom property--colour: #00383B;

Brightness & contrast

Relative luminance0.03144WCAG 2.x, 0 is black and 1 is white

Perceived brightness47.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.89:1

Contrast with white12.89:1WCAG normal text: AAA

Contrast with black1.63:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#FFC7C4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#33353Bno red cones; affects about 1% of men; ΔE 16.2 from the original

Deuteranopia#2B2F3Bno green cones; the most common form, about 1% of men; ΔE 16.9 from the original

Tritanopia#003B39no blue cones; rare, and affects men and women equally; ΔE 4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text12.89:1WCAG large text: AAA

Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.6 Black · ΔE 26.5 Dim grey · ΔE 29 Teal · ΔE 30.9 Slate grey · ΔE 35 Dark cyan · ΔE 35.2

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.59, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3B0300

Analogous#003B21, #001A3B

Triadic#3B0038, #383B00

Split complementary#3B001B, #3B2100

Tetradic#20003B, #3B0300, #1A3B00

Tints, shades & saturation

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

Lighter +40%#08F2FF

Lighter +30%#00C9D4

Lighter +20%#0099A1

Lighter +10%#00686E

Darker −10%#000808

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00383B

Less saturated −25%#073134

Channel breakdown

G56

B59

Red0 (0%)

Green56 (22%)

Blue59 (23.1%)

Hue183.05°

Saturation (HSL)100%

Lightness11.57%

Dominant channelBlue

Hex per channelR 00 · G 38 · B 3B

Keep nerding

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#00383B

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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