Colour

#00001F

#00001F
Blue
Dark
Nearest: Black

#00001F is a blue with RGB values 0, 0, 31 and HSL 240°, 100%, 6%. It is a dark colour, so white text on it reaches 20.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#00001F#00001F

HEX#00001F

RGBrgb(0, 0, 31)

RGB (0–1)0, 0, 0.1216

RGB percentages0%, 0%, 12.2%

HSLhsl(240, 100%, 6.1%)

HSV / HSBhsv(240, 100%, 12.2%)

CMYK100%, 100%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer31

CSS custom property--colour: #00001F;

Brightness & contrast

Relative luminance0.00099WCAG 2.x, 0 is black and 1 is white

Perceived brightness10.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 20.59:1

Contrast with white20.59:1WCAG normal text: AAA

Contrast with black1.02:1WCAG normal text: Fail

Greyscale equivalent#020202

Inverted#FFFFE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#000420no red cones; affects about 1% of men; ΔE 1.6 from the original

Deuteranopia#00021Eno green cones; the most common form, about 1% of men; ΔE 1.8 from the original

Tritanopia#00070Dno blue cones; rare, and affects men and women equally; ΔE 15.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text20.59:1WCAG large text: AAA

Contrast with black, large text1.02:1WCAG large text: Fail

Named colours

Black · ΔE 17.8 Dark slate grey · ΔE 37.6 Dark slateblue · ΔE 44 Midnight blue · ΔE 44.2 Dim grey · ΔE 47 Slate grey · ΔE 53

Nearest named CSS colourBlack (#000000)ΔE 17.78, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F1F00

Analogous#00101F, #10001F

Triadic#1F0000, #001F00

Split complementary#1F1000, #101F00

Tetradic#1F0010, #1F1F00, #001F10

Tints, shades & saturation

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

Lighter +40%#0000EB

Lighter +30%#0000B8

Lighter +20%#000085

Lighter +10%#000052

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00001F

Less saturated −25%#04041B

Channel breakdown

B31

Red0 (0%)

Green0 (0%)

Blue31 (12.2%)

Hue240°

Saturation (HSL)100%

Lightness6.08%

Dominant channelBlue

Hex per channelR 00 · G 00 · B 1F

Keep nerding

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#00001F

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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