Recognised as Colour

#37101C

#37101C
Red
Dark
Nearest: Black

#37101C is a red with RGB values 55, 16, 28 and HSL 342°, 55%, 14%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#37101C#37101C

HEX#37101C

RGBrgb(55, 16, 28)

RGB (0–1)0.2157, 0.0627, 0.1098

RGB percentages21.6%, 6.3%, 11%

HSLhsl(341.5, 54.9%, 13.9%)

HSV / HSBhsv(341.5, 70.9%, 21.6%)

CMYK0%, 70.9%, 49.1%, 78.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,608,604

CSS custom property--colour: #37101C;

Brightness & contrast

Relative luminance0.01267WCAG 2.x, 0 is black and 1 is white

Perceived brightness33.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.76:1

Contrast with white16.76:1WCAG normal text: AAA

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

Greyscale equivalent#191919

Inverted#C8EFE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#18191Cno red cones; affects about 1% of men; ΔE 21 from the original

Deuteranopia#22201Bno green cones; the most common form, about 1% of men; ΔE 21.1 from the original

Tritanopia#3C0C15no blue cones; rare, and affects men and women equally; ΔE 6.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.76:1WCAG large text: AAA

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

Named colours

Black · ΔE 23.6 Dark slate grey · ΔE 38.7 Dim grey · ΔE 39.4 Gray · ΔE 47.4 Saddle brown · ΔE 47.7 Maroon · ΔE 47.7

Nearest named CSS colourBlack (#000000)ΔE 23.6, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#10372B

Analogous#37102F, #371810

Triadic#1C3710, #101C37

Split complementary#103718, #102F37

Tetradic#2F3710, #10372B, #181037

Tints, shades & saturation

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

Lighter +40%#CA4971

Lighter +30%#AE3258

Lighter +20%#862744

Lighter +10%#5F1B30

Darker −10%#0F0508

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#400719

Less saturated −25%#2E191F

Channel breakdown

R55

G16

B28

Red55 (21.6%)

Green16 (6.3%)

Blue28 (11%)

Hue341.54°

Saturation (HSL)54.93%

Lightness13.92%

Dominant channelRed

Hex per channelR 37 · G 10 · B 1C

Keep nerding

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

#37101C

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

Nerdulate something else