Colour

#381D21

#381D21
Red
Dark
Nearest: Black

#381D21 is a red with RGB values 56, 29, 33 and HSL 351°, 32%, 17%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#381D21#381D21

HEX#381D21

RGBrgb(56, 29, 33)

RGB (0–1)0.2196, 0.1137, 0.1294

RGB percentages22%, 11.4%, 12.9%

HSLhsl(351.1, 31.8%, 16.7%)

HSV / HSBhsv(351.1, 48.2%, 22%)

CMYK0%, 48.2%, 41.1%, 78%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,677,473

CSS custom property--colour: #381D21;

Brightness & contrast

Relative luminance0.01829WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.37:1

Contrast with white15.37:1WCAG normal text: AAA

Contrast with black1.37:1WCAG normal text: Fail

Greyscale equivalent#232323

Inverted#C7E2DE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#222221no red cones; affects about 1% of men; ΔE 14.3 from the original

Deuteranopia#282720no green cones; the most common form, about 1% of men; ΔE 15 from the original

Tritanopia#3D1A1Eno blue cones; rare, and affects men and women equally; ΔE 4.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.37:1WCAG large text: AAA

Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Black · ΔE 20.3 Dark slate grey · ΔE 31.2 Dim grey · ΔE 33 Gray · ΔE 41.5 Slate grey · ΔE 43.6 Saddle brown · ΔE 46.1

Nearest named CSS colourBlack (#000000)ΔE 20.3, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1D3834

Analogous#381D2F, #38261D

Triadic#21381D, #1D2138

Split complementary#1D3826, #1D2F38

Tetradic#2F381D, #1D3834, #261D38

Tints, shades & saturation

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

Lighter +40%#B46D78

Lighter +30%#9D515C

Lighter +20%#7B4049

Lighter +10%#5A2E35

Darker −10%#160C0D

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#43121A

Less saturated −25%#2D2828

Channel breakdown

R56

G29

B33

Red56 (22%)

Green29 (11.4%)

Blue33 (12.9%)

Hue351.11°

Saturation (HSL)31.76%

Lightness16.67%

Dominant channelRed

Hex per channelR 38 · G 1D · B 21

Keep nerding

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

#381D21

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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