Colour

#1D00CC

#1D00CC
Blue
Dark
Nearest: Medium blue

#1D00CC is a blue with RGB values 29, 0, 204 and HSL 249°, 100%, 40%. It is a dark colour, so white text on it reaches 10.9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1D00CC#1D00CC

HEX#1D00CC

RGBrgb(29, 0, 204)

RGB (0–1)0.1137, 0, 0.8

RGB percentages11.4%, 0%, 80%

HSLhsl(248.5, 100%, 40%)

HSV / HSBhsv(248.5, 100%, 80%)

CMYK85.8%, 100%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,900,748

CSS custom property--colour: #1D00CC;

Brightness & contrast

Relative luminance0.04621WCAG 2.x, 0 is black and 1 is white

Perceived brightness70.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.91:1

Contrast with white10.91:1WCAG normal text: AAA

Contrast with black1.92:1WCAG normal text: Fail

Greyscale equivalent#151515

Inverted#E2FF33

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0046D1no red cones; affects about 1% of men; ΔE 33.9 from the original

Deuteranopia#0032C9no green cones; the most common form, about 1% of men; ΔE 22.6 from the original

Tritanopia#005477no blue cones; rare, and affects men and women equally; ΔE 98.9 from the original

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

Contrast with white, large text10.91:1WCAG large text: AAA

Contrast with black, large text1.92:1WCAG large text: Fail

Named colours

Medium blue · ΔE 1.8 Blue violet · ΔE 22.5 Blue · ΔE 22.7 Dark violet · ΔE 25.6 Dark blue · ΔE 29.1 Navy · ΔE 34.3

Nearest named CSS colourMedium blue (#0000CD)ΔE 1.81, below the just-noticeable difference

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AFCC00

Analogous#0049CC, #8300CC

Triadic#CC1D00, #00CC1D

Split complementary#CC8300, #49CC00

Tetradic#CC0049, #AFCC00, #00CC83

Tints, shades & saturation

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

Lighter +40%#A799FF

Lighter +30%#7C66FF

Lighter +20%#5033FF

Lighter +10%#2400FF

Darker −10%#160099

Darker −20%#0E0066

Darker −30%#070033

Darker −40%#000000

More saturated +25%#1D00CC

Less saturated −25%#2F19B3

Channel breakdown

R29

B204

Red29 (11.4%)

Green0 (0%)

Blue204 (80%)

Hue248.53°

Saturation (HSL)100%

Lightness40%

Dominant channelBlue

Hex per channelR 1D · G 00 · B CC

Keep nerding

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#1D00CC

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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