Recognised as Colour

#43001D

#43001D
Red
Dark
Nearest: Black

#43001D is a red with RGB values 67, 0, 29 and HSL 334°, 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

#43001D#43001D

HEX#43001D

RGBrgb(67, 0, 29)

RGB (0–1)0.2627, 0, 0.1137

RGB percentages26.3%, 0%, 11.4%

HSLhsl(334, 100%, 13.1%)

HSV / HSBhsv(334, 100%, 26.3%)

CMYK0%, 100%, 56.7%, 73.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,390,941

CSS custom property--colour: #43001D;

Brightness & contrast

Relative luminance0.01282WCAG 2.x, 0 is black and 1 is white

Perceived brightness37.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.71:1

Contrast with white16.71:1WCAG normal text: AAA

Contrast with black1.26:1WCAG normal text: Fail

Greyscale equivalent#101010

Inverted#BCFFE2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#12151Eno red cones; affects about 1% of men; ΔE 32.4 from the original

Deuteranopia#24221Bno green cones; the most common form, about 1% of men; ΔE 33.3 from the original

Tritanopia#4A000Dno blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text16.71:1WCAG large text: AAA

Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Black · ΔE 34.3 Maroon · ΔE 42.4 Brown · ΔE 43 Dim grey · ΔE 46.4 Dark red · ΔE 47.2 Sienna · ΔE 47.4

Nearest named CSS colourBlack (#000000)ΔE 34.28, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#004326

Analogous#43003E, #430500

Triadic#1D4300, #001D43

Split complementary#004305, #003E43

Tetradic#3E4300, #004326, #050043

Tints, shades & saturation

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

Lighter +40%#FF1077

Lighter +30%#DC005F

Lighter +20%#A90049

Lighter +10%#760033

Darker −10%#100007

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#43001D

Less saturated −25%#3B081E

Channel breakdown

R67

B29

Red67 (26.3%)

Green0 (0%)

Blue29 (11.4%)

Hue334.03°

Saturation (HSL)100%

Lightness13.14%

Dominant channelRed

Hex per channelR 43 · G 00 · B 1D

Keep nerding

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#43001D

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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