Colour

#1F00DF

#1F00DF
Blue
Dark
Nearest: Medium blue

#1F00DF is a blue with RGB values 31, 0, 223 and HSL 248°, 100%, 44%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1F00DF#1F00DF

HEX#1F00DF

RGBrgb(31, 0, 223)

RGB (0–1)0.1216, 0, 0.8745

RGB percentages12.2%, 0%, 87.5%

HSLhsl(248.3, 100%, 43.7%)

HSV / HSBhsv(248.3, 100%, 87.5%)

CMYK86.1%, 100%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,031,839

CSS custom property--colour: #1F00DF;

Brightness & contrast

Relative luminance0.05619WCAG 2.x, 0 is black and 1 is white

Perceived brightness77.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.89:1

Contrast with white9.89:1WCAG normal text: AAA

Contrast with black2.12:1WCAG normal text: Fail

Greyscale equivalent#171717

Inverted#E0FF20

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#004DE4no red cones; affects about 1% of men; ΔE 36.2 from the original

Deuteranopia#0037DCno green cones; the most common form, about 1% of men; ΔE 23.7 from the original

Tritanopia#005C82no blue cones; rare, and affects men and women equally; ΔE 105.8 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text9.89:1WCAG large text: AAA

Contrast with black, large text2.12:1WCAG large text: Fail

Named colours

Medium blue · ΔE 7.4 Blue · ΔE 14.4 Blue violet · ΔE 25.5 Dark violet · ΔE 28.4 Dark blue · ΔE 37.4 Dark orchid · ΔE 39.6

Nearest named CSS colourMedium blue (#0000CD)ΔE 7.41, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#C0DF00

Analogous#0050DF, #8F00DF

Triadic#DF1F00, #00DF1F

Split complementary#DF8F00, #50DF00

Tetradic#DF0050, #C0DF00, #00DF8F

Tints, shades & saturation

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

Lighter +40%#B8ACFF

Lighter +30%#8C79FF

Lighter +20%#6046FF

Lighter +10%#3413FF

Darker −10%#1800AC

Darker −20%#110079

Darker −30%#0A0046

Darker −40%#030013

More saturated +25%#1F00DF

Less saturated −25%#331CC3

Channel breakdown

R31

B223

Red31 (12.2%)

Green0 (0%)

Blue223 (87.5%)

Hue248.34°

Saturation (HSL)100%

Lightness43.73%

Dominant channelBlue

Hex per channelR 1F · G 00 · B DF

Keep nerding

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

#1F00DF

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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