Colour

#11111B

#11111B
Blue
Dark
Nearest: Black

#11111B is a blue with RGB values 17, 17, 27 and HSL 240°, 23%, 9%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#11111B#11111B

HEX#11111B

RGBrgb(17, 17, 27)

RGB (0–1)0.0667, 0.0667, 0.1059

RGB percentages6.7%, 6.7%, 10.6%

HSLhsl(240, 22.7%, 8.6%)

HSV / HSBhsv(240, 37%, 10.6%)

CMYK37%, 37%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,118,491

CSS custom property--colour: #11111B;

Brightness & contrast

Relative luminance0.00599WCAG 2.x, 0 is black and 1 is white

Perceived brightness18.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.75:1

Contrast with white18.75:1WCAG normal text: AAA

Contrast with black1.12:1WCAG normal text: Fail

Greyscale equivalent#121212

Inverted#EEEEE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0E121Bno red cones; affects about 1% of men; ΔE 1.6 from the original

Deuteranopia#0E121Bno green cones; the most common form, about 1% of men; ΔE 1.6 from the original

Tritanopia#0F1314no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.75:1WCAG large text: AAA

Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Black · ΔE 8.9 Dark slate grey · ΔE 29.6 Dim grey · ΔE 39.6 Slate grey · ΔE 47.8 Gray · ΔE 48.7 Dark slateblue · ΔE 49.6

Nearest named CSS colourBlack (#000000)ΔE 8.86, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B1B11

Analogous#11161B, #16111B

Triadic#1B1111, #111B11

Split complementary#1B1611, #161B11

Tetradic#1B1116, #1B1B11, #111B16

Tints, shades & saturation

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

Lighter +40%#606098

Lighter +30%#4C4C79

Lighter +20%#38385A

Lighter +10%#25253A

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0B0B21

Less saturated −25%#161616

Channel breakdown

R17

G17

B27

Red17 (6.7%)

Green17 (6.7%)

Blue27 (10.6%)

Hue240°

Saturation (HSL)22.73%

Lightness8.63%

Dominant channelBlue

Hex per channelR 11 · G 11 · B 1B

Keep nerding

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#11111B

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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