Colour

#101A23

#101A23
Blue
Dark
Nearest: Black

#101A23 is a blue with RGB values 16, 26, 35 and HSL 208°, 37%, 10%. It is a dark colour, so white text on it reaches 17.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#101A23#101A23

HEX#101A23

RGBrgb(16, 26, 35)

RGB (0–1)0.0627, 0.102, 0.1373

RGB percentages6.3%, 10.2%, 13.7%

HSLhsl(208.4, 37.3%, 10%)

HSV / HSBhsv(208.4, 54.3%, 13.7%)

CMYK54.3%, 25.7%, 0%, 86.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,055,267

CSS custom property--colour: #101A23;

Brightness & contrast

Relative luminance0.0097WCAG 2.x, 0 is black and 1 is white

Perceived brightness24.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.59:1

Contrast with white17.59:1WCAG normal text: AAA

Contrast with black1.19:1WCAG normal text: Fail

Greyscale equivalent#191919

Inverted#EFE5DC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#161A23no red cones; affects about 1% of men; ΔE 2.5 from the original

Deuteranopia#141823no green cones; the most common form, about 1% of men; ΔE 3.1 from the original

Tritanopia#091C1Dno blue cones; rare, and affects men and women equally; ΔE 7.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.59:1WCAG large text: AAA

Contrast with black, large text1.19:1WCAG large text: Fail

Named colours

Black · ΔE 11.7 Dark slate grey · ΔE 25.1 Dim grey · ΔE 36.5 Slate grey · ΔE 44.2 Gray · ΔE 45.5 Light slate grey · ΔE 47.3

Nearest named CSS colourBlack (#000000)ΔE 11.68, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#231910

Analogous#102323, #101023

Triadic#23101A, #1A2310

Split complementary#231010, #232310

Tetradic#231023, #231910, #102310

Tints, shades & saturation

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

Lighter +40%#5082AF

Lighter +30%#40688C

Lighter +20%#304E69

Lighter +10%#203446

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0A1A29

Less saturated −25%#161A1D

Channel breakdown

R16

G26

B35

Red16 (6.3%)

Green26 (10.2%)

Blue35 (13.7%)

Hue208.42°

Saturation (HSL)37.25%

Lightness10%

Dominant channelBlue

Hex per channelR 10 · G 1A · B 23

Keep nerding

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#101A23

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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