Colour

#373A4F

#373A4F
Blue
Dark
Nearest: Dark slate grey

#373A4F is a blue with RGB values 55, 58, 79 and HSL 233°, 18%, 26%. 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 slate grey.

Colour values

#373A4F#373A4F

HEX#373A4F

RGBrgb(55, 58, 79)

RGB (0–1)0.2157, 0.2275, 0.3098

RGB percentages21.6%, 22.7%, 31%

HSLhsl(232.5, 17.9%, 26.3%)

HSV / HSBhsv(232.5, 30.4%, 31%)

CMYK30.4%, 26.6%, 0%, 69%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,619,407

CSS custom property--colour: #373A4F;

Brightness & contrast

Relative luminance0.04403WCAG 2.x, 0 is black and 1 is white

Perceived brightness59.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.17:1

Contrast with white11.17:1WCAG normal text: AAA

Contrast with black1.88:1WCAG normal text: Fail

Greyscale equivalent#3B3B3B

Inverted#C8C5B0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#343C50no red cones; affects about 1% of men; ΔE 2.1 from the original

Deuteranopia#333A4Eno green cones; the most common form, about 1% of men; ΔE 1.7 from the original

Tritanopia#313E41no blue cones; rare, and affects men and women equally; ΔE 13 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.17:1WCAG large text: AAA

Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 19.7 Dim grey · ΔE 23.9 Black · ΔE 28.6 Slate grey · ΔE 28.7 Light slate grey · ΔE 31.7 Gray · ΔE 31.8

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.65, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4F4C37

Analogous#37464F, #40374F

Triadic#4F373A, #3A4F37

Split complementary#4F4037, #464F37

Tetradic#4F3746, #4F4C37, #374F40

Tints, shades & saturation

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

Lighter +40%#9A9DB8

Lighter +30%#7C81A3

Lighter +20%#61668B

Lighter +10%#4C506D

Darker −10%#222431

Darker −20%#0D0E13

Darker −30%#000000

Darker −40%#000000

More saturated +25%#262D60

Less saturated −25%#434343

Channel breakdown

R55

G58

B79

Red55 (21.6%)

Green58 (22.7%)

Blue79 (31%)

Hue232.5°

Saturation (HSL)17.91%

Lightness26.27%

Dominant channelBlue

Hex per channelR 37 · G 3A · B 4F

Keep nerding

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

#373A4F

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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