Colour

#1F3761

#1F3761
Blue
Dark
Nearest: Dark slateblue

#1F3761 is a blue with RGB values 31, 55, 97 and HSL 218°, 52%, 25%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1F3761#1F3761

HEX#1F3761

RGBrgb(31, 55, 97)

RGB (0–1)0.1216, 0.2157, 0.3804

RGB percentages12.2%, 21.6%, 38%

HSLhsl(218.2, 51.6%, 25.1%)

HSV / HSBhsv(218.2, 68%, 38%)

CMYK68%, 43.3%, 0%, 62%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,045,793

CSS custom property--colour: #1F3761;

Brightness & contrast

Relative luminance0.03887WCAG 2.x, 0 is black and 1 is white

Perceived brightness56 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.82:1

Contrast with white11.82:1WCAG normal text: AAA

Contrast with black1.78:1WCAG normal text: Fail

Greyscale equivalent#353535

Inverted#E0C89E

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#243B63no red cones; affects about 1% of men; ΔE 2.4 from the original

Deuteranopia#1B3560no green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#004147no blue cones; rare, and affects men and women equally; ΔE 28.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.82:1WCAG large text: AAA

Contrast with black, large text1.78:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.9 Dark slate grey · ΔE 30.8 Steel blue · ΔE 31.1 Midnight blue · ΔE 34.7 Slate grey · ΔE 35.1 Dim grey · ΔE 35.3

Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.93, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#61491F

Analogous#1F5861, #281F61

Triadic#611F37, #37611F

Split complementary#61281F, #58611F

Tetradic#611F58, #61491F, #1F6128

Tints, shades & saturation

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

Lighter +40%#7899D4

Lighter +30%#517CC8

Lighter +20%#3863AE

Lighter +10%#2B4D88

Darker −10%#13213A

Darker −20%#060B14

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0F3371

Less saturated −25%#2F3B51

Channel breakdown

R31

G55

B97

Red31 (12.2%)

Green55 (21.6%)

Blue97 (38%)

Hue218.18°

Saturation (HSL)51.56%

Lightness25.1%

Dominant channelBlue

Hex per channelR 1F · G 37 · B 61

Keep nerding

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

#1F3761

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