Recognised as Colour

#181B27

#181B27
Blue
Dark
Nearest: Black

#181B27 is a blue with RGB values 24, 27, 39 and HSL 228°, 24%, 12%. It is a dark colour, so white text on it reaches 17.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181B27#181B27

HEX#181B27

RGBrgb(24, 27, 39)

RGB (0–1)0.0941, 0.1059, 0.1529

RGB percentages9.4%, 10.6%, 15.3%

HSLhsl(228, 23.8%, 12.4%)

HSV / HSBhsv(228, 38.5%, 15.3%)

CMYK38.5%, 30.8%, 0%, 84.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,579,815

CSS custom property--colour: #181B27;

Brightness & contrast

Relative luminance0.01125WCAG 2.x, 0 is black and 1 is white

Perceived brightness27.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.14:1

Contrast with white17.14:1WCAG normal text: AAA

Contrast with black1.22:1WCAG normal text: Fail

Greyscale equivalent#1B1B1B

Inverted#E7E4D8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#171C28no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#161B27no green cones; the most common form, about 1% of men; ΔE 0.8 from the original

Tritanopia#141D1Fno blue cones; rare, and affects men and women equally; ΔE 8.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.14:1WCAG large text: AAA

Contrast with black, large text1.22:1WCAG large text: Fail

Named colours

Black · ΔE 13.4 Dark slate grey · ΔE 25.9 Dim grey · ΔE 35.6 Slate grey · ΔE 43.1 Gray · ΔE 44.5 Dark slateblue · ΔE 46

Nearest named CSS colourBlack (#000000)ΔE 13.39, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#272418

Analogous#182327, #1C1827

Triadic#27181B, #1B2718

Split complementary#271D18, #232718

Tetradic#271823, #272418, #18271C

Tints, shades & saturation

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

Lighter +40%#6974A2

Lighter +30%#525D86

Lighter +20%#3F4766

Lighter +10%#2B3147

Darker −10%#050507

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#10162F

Less saturated −25%#202020

Channel breakdown

R24

G27

B39

Red24 (9.4%)

Green27 (10.6%)

Blue39 (15.3%)

Hue228°

Saturation (HSL)23.81%

Lightness12.35%

Dominant channelBlue

Hex per channelR 18 · G 1B · B 27

Keep nerding

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

#181B27

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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