Colour

#371AD8

#371AD8
Blue
Dark
Nearest: Medium blue

#371AD8 is a blue with RGB values 55, 26, 216 and HSL 249°, 79%, 47%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#371AD8#371AD8

HEX#371AD8

RGBrgb(55, 26, 216)

RGB (0–1)0.2157, 0.102, 0.8471

RGB percentages21.6%, 10.2%, 84.7%

HSLhsl(249.2, 78.5%, 47.5%)

HSV / HSBhsv(249.2, 88%, 84.7%)

CMYK74.5%, 88%, 0%, 15.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,611,352

CSS custom property--colour: #371AD8;

Brightness & contrast

Relative luminance0.06509WCAG 2.x, 0 is black and 1 is white

Perceived brightness81.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.12:1

Contrast with white9.12:1WCAG normal text: AAA

Contrast with black2.3:1WCAG normal text: Fail

Greyscale equivalent#2E2E2E

Inverted#C8E527

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0050DDno red cones; affects about 1% of men; ΔE 32.2 from the original

Deuteranopia#003FD5no green cones; the most common form, about 1% of men; ΔE 22.9 from the original

Tritanopia#005C80no blue cones; rare, and affects men and women equally; ΔE 96.7 from the original

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

Contrast with white, large text9.12:1WCAG large text: AAA

Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Medium blue · ΔE 6.8 Blue violet · ΔE 18.5 Dark violet · ΔE 23 Blue · ΔE 24.2 Dark blue · ΔE 29.2 Dark orchid · ΔE 31

Nearest named CSS colourMedium blue (#0000CD)ΔE 6.84, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BBD81A

Analogous#1A5CD8, #961AD8

Triadic#D8371A, #1AD837

Split complementary#D8961A, #5CD81A

Tetradic#D81A5C, #BBD81A, #1AD896

Tints, shades & saturation

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

Lighter +40%#CEC6F8

Lighter +30%#A698F3

Lighter +20%#7F6BED

Lighter +10%#573DE8

Darker −10%#2B15AA

Darker −20%#200F7D

Darker −30%#140A4F

Darker −40%#090422

More saturated +25%#2500F2

Less saturated −25%#4C38BA

Channel breakdown

R55

G26

B216

Red55 (21.6%)

Green26 (10.2%)

Blue216 (84.7%)

Hue249.16°

Saturation (HSL)78.51%

Lightness47.45%

Dominant channelBlue

Hex per channelR 37 · G 1A · B D8

Keep nerding

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#371AD8

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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