Colour

#1B2437

#1B2437
Blue
Dark
Nearest: Black

#1B2437 is a blue with RGB values 27, 36, 55 and HSL 221°, 34%, 16%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1B2437#1B2437

HEX#1B2437

RGBrgb(27, 36, 55)

RGB (0–1)0.1059, 0.1412, 0.2157

RGB percentages10.6%, 14.1%, 21.6%

HSLhsl(220.7, 34.1%, 16.1%)

HSV / HSBhsv(220.7, 50.9%, 21.6%)

CMYK50.9%, 34.5%, 0%, 78.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,778,743

CSS custom property--colour: #1B2437;

Brightness & contrast

Relative luminance0.01771WCAG 2.x, 0 is black and 1 is white

Perceived brightness36.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.51:1

Contrast with white15.51:1WCAG normal text: AAA

Contrast with black1.35:1WCAG normal text: Fail

Greyscale equivalent#232323

Inverted#E4DBC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1D2538no red cones; affects about 1% of men; ΔE 0.6 from the original

Deuteranopia#1A2337no green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#11282Bno blue cones; rare, and affects men and women equally; ΔE 13.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.51:1WCAG large text: AAA

Contrast with black, large text1.35:1WCAG large text: Fail

Named colours

Black · ΔE 19.8 Dark slate grey · ΔE 24.1 Dim grey · ΔE 33.2 Slate grey · ΔE 39 Dark slateblue · ΔE 40.7 Gray · ΔE 41.7

Nearest named CSS colourBlack (#000000)ΔE 19.81, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#372E1B

Analogous#1B3237, #201B37

Triadic#371B24, #24371B

Split complementary#37201B, #32371B

Tetradic#371B32, #372E1B, #1B3720

Tints, shades & saturation

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

Lighter +40%#6981B5

Lighter +30%#4D679E

Lighter +20%#3D517B

Lighter +10%#2C3A59

Darker −10%#0A0E15

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#112041

Less saturated −25%#25282D

Channel breakdown

R27

G36

B55

Red27 (10.6%)

Green36 (14.1%)

Blue55 (21.6%)

Hue220.71°

Saturation (HSL)34.15%

Lightness16.08%

Dominant channelBlue

Hex per channelR 1B · G 24 · B 37

Keep nerding

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

#1B2437

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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