Colour

#43001B

#43001B
Red
Dark
Nearest: Black

#43001B is a red with RGB values 67, 0, 27 and HSL 336°, 100%, 13%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#43001B#43001B

HEX#43001B

RGBrgb(67, 0, 27)

RGB (0–1)0.2627, 0, 0.1059

RGB percentages26.3%, 0%, 10.6%

HSLhsl(335.8, 100%, 13.1%)

HSV / HSBhsv(335.8, 100%, 26.3%)

CMYK0%, 100%, 59.7%, 73.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,390,939

CSS custom property--colour: #43001B;

Brightness & contrast

Relative luminance0.01272WCAG 2.x, 0 is black and 1 is white

Perceived brightness37.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.74:1

Contrast with white16.74:1WCAG normal text: AAA

Contrast with black1.25:1WCAG normal text: Fail

Greyscale equivalent#101010

Inverted#BCFFE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#13151Cno red cones; affects about 1% of men; ΔE 32.5 from the original

Deuteranopia#252219no green cones; the most common form, about 1% of men; ΔE 33 from the original

Tritanopia#4A000Cno blue cones; rare, and affects men and women equally; ΔE 12 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text16.74:1WCAG large text: AAA

Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 34.2 Maroon · ΔE 41.3 Brown · ΔE 42.1 Dark red · ΔE 46.1 Sienna · ΔE 46.4 Dim grey · ΔE 46.4

Nearest named CSS colourBlack (#000000)ΔE 34.18, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#004328

Analogous#43003C, #430700

Triadic#1B4300, #001B43

Split complementary#004307, #003C43

Tetradic#3C4300, #004328, #070043

Tints, shades & saturation

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

Lighter +40%#FF1070

Lighter +30%#DC0059

Lighter +20%#A90044

Lighter +10%#760030

Darker −10%#100006

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#43001B

Less saturated −25%#3B081D

Channel breakdown

R67

B27

Red67 (26.3%)

Green0 (0%)

Blue27 (10.6%)

Hue335.82°

Saturation (HSL)100%

Lightness13.14%

Dominant channelRed

Hex per channelR 43 · G 00 · B 1B

Keep nerding

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#43001B

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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