Colour

#1B2740

#1B2740
Blue
Dark
Nearest: Black

#1B2740 is a blue with RGB values 27, 39, 64 and HSL 221°, 41%, 18%. It is a dark colour, so white text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1B2740#1B2740

HEX#1B2740

RGBrgb(27, 39, 64)

RGB (0–1)0.1059, 0.1529, 0.251

RGB percentages10.6%, 15.3%, 25.1%

HSLhsl(220.5, 40.7%, 17.8%)

HSV / HSBhsv(220.5, 57.8%, 25.1%)

CMYK57.8%, 39.1%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,779,520

CSS custom property--colour: #1B2740;

Brightness & contrast

Relative luminance0.02054WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.88:1

Contrast with white14.88:1WCAG normal text: AAA

Contrast with black1.41:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#E4D8BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1D2941no red cones; affects about 1% of men; ΔE 1.2 from the original

Deuteranopia#19263Fno green cones; the most common form, about 1% of men; ΔE 0.6 from the original

Tritanopia#0A2C30no blue cones; rare, and affects men and women equally; ΔE 17.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.88:1WCAG large text: AAA

Contrast with black, large text1.41:1WCAG large text: Fail

Named colours

Black · ΔE 23.8 Dark slate grey · ΔE 25.7 Dim grey · ΔE 33.7 Dark slateblue · ΔE 36.7 Slate grey · ΔE 38.1 Steel blue · ΔE 40.2

Nearest named CSS colourBlack (#000000)ΔE 23.79, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#40341B

Analogous#1B3A40, #211B40

Triadic#401B27, #27401B

Split complementary#40211B, #3A401B

Tetradic#401B3A, #40341B, #1B4021

Tints, shades & saturation

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

Lighter +40%#6884BF

Lighter +30%#4869AC

Lighter +20%#395388

Lighter +10%#2A3D64

Darker −10%#0C111C

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#10234B

Less saturated −25%#262B35

Channel breakdown

R27

G39

B64

Red27 (10.6%)

Green39 (15.3%)

Blue64 (25.1%)

Hue220.54°

Saturation (HSL)40.66%

Lightness17.84%

Dominant channelBlue

Hex per channelR 1B · G 27 · B 40

Keep nerding

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

#1B2740

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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