Recognised as Colour

#331D8C

#331D8C
Blue
Dark
Nearest: Indigo

#331D8C is a blue with RGB values 51, 29, 140 and HSL 252°, 66%, 33%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#331D8C#331D8C

HEX#331D8C

RGBrgb(51, 29, 140)

RGB (0–1)0.2, 0.1137, 0.549

RGB percentages20%, 11.4%, 54.9%

HSLhsl(251.9, 65.7%, 33.1%)

HSV / HSBhsv(251.9, 79.3%, 54.9%)

CMYK63.6%, 79.3%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,349,900

CSS custom property--colour: #331D8C;

Brightness & contrast

Relative luminance0.03476WCAG 2.x, 0 is black and 1 is white

Perceived brightness59.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.39:1

Contrast with white12.39:1WCAG normal text: AAA

Contrast with black1.7:1WCAG normal text: Fail

Greyscale equivalent#2A2A2A

Inverted#CCE273

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00388Fno red cones; affects about 1% of men; ΔE 21.5 from the original

Deuteranopia#00308Ano green cones; the most common form, about 1% of men; ΔE 17.4 from the original

Tritanopia#003E54no blue cones; rare, and affects men and women equally; ΔE 63.9 from the original

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

Contrast with white, large text12.39:1WCAG large text: AAA

Contrast with black, large text1.7:1WCAG large text: Fail

Named colours

Indigo · ΔE 10.9 Navy · ΔE 12.9 Midnight blue · ΔE 14 Rebecca purple · ΔE 15.1 Dark blue · ΔE 15.9 Dark slateblue · ΔE 23.7

Nearest named CSS colourIndigo (#4B0082)ΔE 10.9, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#768C1D

Analogous#1D3F8C, #6A1D8C

Triadic#8C331D, #1D8C33

Split complementary#8C6A1D, #3F8C1D

Tetradic#8C1D3F, #768C1D, #1D8C6A

Tints, shades & saturation

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

Lighter +40%#9F8EE7

Lighter +30%#7C63DF

Lighter +20%#5839D6

Lighter +10%#4226B6

Darker −10%#241462

Darker −20%#140B38

Darker −30%#05030D

Darker −40%#000000

More saturated +25%#2608A1

Less saturated −25%#403277

Channel breakdown

R51

G29

B140

Red51 (20%)

Green29 (11.4%)

Blue140 (54.9%)

Hue251.89°

Saturation (HSL)65.68%

Lightness33.14%

Dominant channelBlue

Hex per channelR 33 · G 1D · B 8C

Keep nerding

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

#331D8C

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

Nerdulate something else