Recognised as Colour

#3D181B

#3D181B
Red
Dark
Nearest: Black

#3D181B is a red with RGB values 61, 24, 27 and HSL 355°, 44%, 17%. It is a dark colour, so white text on it reaches 15.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#3D181B#3D181B

HEX#3D181B

RGBrgb(61, 24, 27)

RGB (0–1)0.2392, 0.0941, 0.1059

RGB percentages23.9%, 9.4%, 10.6%

HSLhsl(355.1, 43.5%, 16.7%)

HSV / HSBhsv(355.1, 60.7%, 23.9%)

CMYK0%, 60.7%, 55.7%, 76.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,003,867

CSS custom property--colour: #3D181B;

Brightness & contrast

Relative luminance0.01724WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.61:1

Contrast with white15.61:1WCAG normal text: AAA

Contrast with black1.34:1WCAG normal text: Fail

Greyscale equivalent#202020

Inverted#C2E7E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#201F1Bno red cones; affects about 1% of men; ΔE 19.5 from the original

Deuteranopia#29261Ano green cones; the most common form, about 1% of men; ΔE 19.7 from the original

Tritanopia#431319no blue cones; rare, and affects men and women equally; ΔE 5.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.61:1WCAG large text: AAA

Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Black · ΔE 24.1 Dim grey · ΔE 36.2 Dark slate grey · ΔE 36.3 Saddle brown · ΔE 42.3 Sienna · ΔE 43 Gray · ΔE 44.2

Nearest named CSS colourBlack (#000000)ΔE 24.12, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#183D3A

Analogous#3D182D, #3D2818

Triadic#1B3D18, #181B3D

Split complementary#183D28, #182D3D

Tetradic#2D3D18, #183D3A, #28183D

Tints, shades & saturation

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

Lighter +40%#C16068

Lighter +30%#AB434C

Lighter +20%#86353B

Lighter +10%#62262B

Darker −10%#180A0B

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#480D12

Less saturated −25%#322324

Channel breakdown

R61

G24

B27

Red61 (23.9%)

Green24 (9.4%)

Blue27 (10.6%)

Hue355.14°

Saturation (HSL)43.53%

Lightness16.67%

Dominant channelRed

Hex per channelR 3D · G 18 · B 1B

Keep nerding

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

#3D181B

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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