Colour

#001F3F

#001F3F
Blue
Dark
Nearest: Black

#001F3F is a blue with RGB values 0, 31, 63 and HSL 210°, 100%, 12%. It is a dark colour, so white text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#001F3F#001F3F

HEX#001F3F

RGBrgb(0, 31, 63)

RGB (0–1)0, 0.1216, 0.2471

RGB percentages0%, 12.2%, 24.7%

HSLhsl(210.5, 100%, 12.4%)

HSV / HSBhsv(210.5, 100%, 24.7%)

CMYK100%, 50.8%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,999

CSS custom property--colour: #001F3F;

Brightness & contrast

Relative luminance0.01339WCAG 2.x, 0 is black and 1 is white

Perceived brightness31.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.56:1

Contrast with white16.56:1WCAG normal text: AAA

Contrast with black1.27:1WCAG normal text: Fail

Greyscale equivalent#1B1B1B

Inverted#FFE0C0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0E2240no red cones; affects about 1% of men; ΔE 2.8 from the original

Deuteranopia#021C3Eno green cones; the most common form, about 1% of men; ΔE 2.6 from the original

Tritanopia#00272Bno blue cones; rare, and affects men and women equally; ΔE 22.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.56:1WCAG large text: AAA

Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Black · ΔE 26.5 Dark slate grey · ΔE 31.8 Dark slateblue · ΔE 35 Midnight blue · ΔE 38.6 Dim grey · ΔE 40.6 Steel blue · ΔE 42.5

Nearest named CSS colourBlack (#000000)ΔE 26.49, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3F2000

Analogous#003F3F, #00003F

Triadic#3F001F, #1F3F00

Split complementary#3F0100, #3E3F00

Tetradic#3F003F, #3F2000, #003F00

Tints, shades & saturation

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

Lighter +40%#0C84FF

Lighter +30%#006AD8

Lighter +20%#0051A5

Lighter +10%#003872

Darker −10%#00060C

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001F3F

Less saturated −25%#081F37

Channel breakdown

G31

B63

Red0 (0%)

Green31 (12.2%)

Blue63 (24.7%)

Hue210.48°

Saturation (HSL)100%

Lightness12.35%

Dominant channelBlue

Hex per channelR 00 · G 1F · B 3F

Keep nerding

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

#001F3F

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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