Colour

#421A18

#421A18
Red
Dark
Nearest: Black

#421A18 is a red with RGB values 66, 26, 24 and HSL 3°, 47%, 18%. It is a dark colour, so white text on it reaches 15.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#421A18#421A18

HEX#421A18

RGBrgb(66, 26, 24)

RGB (0–1)0.2588, 0.102, 0.0941

RGB percentages25.9%, 10.2%, 9.4%

HSLhsl(2.9, 46.7%, 17.6%)

HSV / HSBhsv(2.9, 63.6%, 25.9%)

CMYK0%, 60.6%, 63.6%, 74.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,332,056

CSS custom property--colour: #421A18;

Brightness & contrast

Relative luminance0.01963WCAG 2.x, 0 is black and 1 is white

Perceived brightness42 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.08:1

Contrast with white15.08:1WCAG normal text: AAA

Contrast with black1.39:1WCAG normal text: Fail

Greyscale equivalent#222222

Inverted#BDE5E7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#242118no red cones; affects about 1% of men; ΔE 20.3 from the original

Deuteranopia#2E2917no green cones; the most common form, about 1% of men; ΔE 20.3 from the original

Tritanopia#49131Ano blue cones; rare, and affects men and women equally; ΔE 7.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.08:1WCAG large text: AAA

Contrast with black, large text1.39:1WCAG large text: Fail

Named colours

Black · ΔE 26.8 Dim grey · ΔE 36.5 Dark slate grey · ΔE 37.7 Saddle brown · ΔE 38.2 Sienna · ΔE 39.2 Maroon · ΔE 41

Nearest named CSS colourBlack (#000000)ΔE 26.8, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#184042

Analogous#42182B, #422F18

Triadic#18421A, #1A1842

Split complementary#18422F, #182B42

Tetradic#2B4218, #184042, #2F1842

Tints, shades & saturation

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

Lighter +40%#C56561

Lighter +30%#B24641

Lighter +20%#8D3733

Lighter +10%#672926

Darker −10%#1D0B0A

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#4D100D

Less saturated −25%#372423

Channel breakdown

R66

G26

B24

Red66 (25.9%)

Green26 (10.2%)

Blue24 (9.4%)

Hue2.86°

Saturation (HSL)46.67%

Lightness17.65%

Dominant channelRed

Hex per channelR 42 · G 1A · B 18

Keep nerding

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

#421A18

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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