Colour

#1F2128

#1F2128
Blue
Dark
Nearest: Black

#1F2128 is a blue with RGB values 31, 33, 40 and HSL 227°, 13%, 14%. It is a dark colour, so white text on it reaches 16.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1F2128#1F2128

HEX#1F2128

RGBrgb(31, 33, 40)

RGB (0–1)0.1216, 0.1294, 0.1569

RGB percentages12.2%, 12.9%, 15.7%

HSLhsl(226.7, 12.7%, 13.9%)

HSV / HSBhsv(226.7, 22.5%, 15.7%)

CMYK22.5%, 17.5%, 0%, 84.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,040,104

CSS custom property--colour: #1F2128;

Brightness & contrast

Relative luminance0.01532WCAG 2.x, 0 is black and 1 is white

Perceived brightness33.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.07:1

Contrast with white16.07:1WCAG normal text: AAA

Contrast with black1.31:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#E0DED7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F2228no red cones; affects about 1% of men; ΔE 1 from the original

Deuteranopia#1E2128no green cones; the most common form, about 1% of men; ΔE 0.5 from the original

Tritanopia#1D2223no blue cones; rare, and affects men and women equally; ΔE 4.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.07:1WCAG large text: AAA

Contrast with black, large text1.31:1WCAG large text: Fail

Named colours

Black · ΔE 13.8 Dark slate grey · ΔE 22.4 Dim grey · ΔE 32 Slate grey · ΔE 40.5 Gray · ΔE 41.1 Light slate grey · ΔE 43.7

Nearest named CSS colourBlack (#000000)ΔE 13.79, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#28261F

Analogous#1F2628, #211F28

Triadic#281F21, #21281F

Split complementary#28211F, #26281F

Tetradic#281F26, #28261F, #1F2822

Tints, shades & saturation

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

Lighter +40%#7B8198

Lighter +30%#62687E

Lighter +20%#4C5061

Lighter +10%#353945

Darker −10%#09090B

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#161C31

Less saturated −25%#242424

Channel breakdown

R31

G33

B40

Red31 (12.2%)

Green33 (12.9%)

Blue40 (15.7%)

Hue226.67°

Saturation (HSL)12.68%

Lightness13.92%

Dominant channelBlue

Hex per channelR 1F · G 21 · B 28

Keep nerding

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

#1F2128

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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