Recognised as Colour

#66021C

#66021C
Red
Dark
Nearest: Maroon

#66021C is a red with RGB values 102, 2, 28 and HSL 344°, 96%, 20%. It is a dark colour, so white text on it reaches 13.2:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#66021C#66021C

HEX#66021C

RGBrgb(102, 2, 28)

RGB (0–1)0.4, 0.0078, 0.1098

RGB percentages40%, 0.8%, 11%

HSLhsl(344.4, 96.2%, 20.4%)

HSV / HSBhsv(344.4, 98%, 40%)

CMYK0%, 98%, 72.5%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,685,212

CSS custom property--colour: #66021C;

Brightness & contrast

Relative luminance0.02952WCAG 2.x, 0 is black and 1 is white

Perceived brightness56.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.2:1

Contrast with white13.2:1WCAG normal text: AAA

Contrast with black1.59:1WCAG normal text: Fail

Greyscale equivalent#191919

Inverted#99FDE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#25231Cno red cones; affects about 1% of men; ΔE 43.6 from the original

Deuteranopia#3D3719no green cones; the most common form, about 1% of men; ΔE 43.8 from the original

Tritanopia#71000Eno blue cones; rare, and affects men and women equally; ΔE 12.8 from the original

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

Contrast with white, large text13.2:1WCAG large text: AAA

Contrast with black, large text1.59:1WCAG large text: Fail

Named colours

Maroon · ΔE 24.4 Brown · ΔE 24.8 Dark red · ΔE 28.9 Firebrick · ΔE 32.9 Sienna · ΔE 33.6 Indian red · ΔE 34.4

Nearest named CSS colourMaroon (#800000)ΔE 24.38, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#02664C

Analogous#66024E, #661A02

Triadic#1C6602, #021C66

Split complementary#02661A, #024E66

Tetradic#4E6602, #02664C, #1A0266

Tints, shades & saturation

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

Lighter +40%#FB396B

Lighter +30%#FA0746

Lighter +20%#CA0437

Lighter +10%#98032A

Darker −10%#34010E

Darker −20%#020001

Darker −30%#000000

Darker −40%#000000

More saturated +25%#68001B

Less saturated −25%#590F22

Channel breakdown

R102

B28

Red102 (40%)

Green2 (0.8%)

Blue28 (11%)

Hue344.4°

Saturation (HSL)96.15%

Lightness20.39%

Dominant channelRed

Hex per channelR 66 · G 02 · B 1C

Keep nerding

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

#66021C

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