Colour

#2A17B3

#2A17B3
Blue
Dark
Nearest: Dark blue

#2A17B3 is a blue with RGB values 42, 23, 179 and HSL 247°, 77%, 40%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#2A17B3#2A17B3

HEX#2A17B3

RGBrgb(42, 23, 179)

RGB (0–1)0.1647, 0.0902, 0.702

RGB percentages16.5%, 9%, 70.2%

HSLhsl(247.3, 77.2%, 39.6%)

HSV / HSBhsv(247.3, 87.2%, 70.2%)

CMYK76.5%, 87.2%, 0%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,758,579

CSS custom property--colour: #2A17B3;

Brightness & contrast

Relative luminance0.0436WCAG 2.x, 0 is black and 1 is white

Perceived brightness67 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.22:1

Contrast with white11.22:1WCAG normal text: AAA

Contrast with black1.87:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#D5E84C

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0042B7no red cones; affects about 1% of men; ΔE 27.6 from the original

Deuteranopia#0033B0no green cones; the most common form, about 1% of men; ΔE 19.1 from the original

Tritanopia#004C6Ano blue cones; rare, and affects men and women equally; ΔE 83.1 from the original

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

Contrast with white, large text11.22:1WCAG large text: AAA

Contrast with black, large text1.87:1WCAG large text: Fail

Named colours

Dark blue · ΔE 13.5 Navy · ΔE 18.3 Medium blue · ΔE 19.3 Blue violet · ΔE 22.8 Indigo · ΔE 23.7 Dark violet · ΔE 26.4

Nearest named CSS colourDark blue (#00008B)ΔE 13.53, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A0B317

Analogous#1752B3, #7817B3

Triadic#B32A17, #17B32A

Split complementary#B37817, #52B317

Tetradic#B31752, #A0B317, #17B378

Tints, shades & saturation

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

Lighter +40%#ADA3F3

Lighter +30%#8476ED

Lighter +20%#5C48E8

Lighter +10%#351DE0

Darker −10%#1F1186

Darker −20%#150B59

Darker −30%#0A062B

Darker −40%#000000

More saturated +25%#1900CA

Less saturated −25%#3D309A

Channel breakdown

R42

G23

B179

Red42 (16.5%)

Green23 (9%)

Blue179 (70.2%)

Hue247.31°

Saturation (HSL)77.23%

Lightness39.61%

Dominant channelBlue

Hex per channelR 2A · G 17 · B B3

Keep nerding

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#2A17B3

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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