Recognised as Colour

#66040F

#66040F
Red
Dark
Nearest: Maroon

#66040F is a red with RGB values 102, 4, 15 and HSL 353°, 92%, 21%. 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

#66040F#66040F

HEX#66040F

RGBrgb(102, 4, 15)

RGB (0–1)0.4, 0.0157, 0.0588

RGB percentages40%, 1.6%, 5.9%

HSLhsl(353.3, 92.5%, 20.8%)

HSV / HSBhsv(353.3, 96.1%, 40%)

CMYK0%, 96.1%, 85.3%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,685,711

CSS custom property--colour: #66040F;

Brightness & contrast

Relative luminance0.02946WCAG 2.x, 0 is black and 1 is white

Perceived brightness56.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.21:1

Contrast with white13.21:1WCAG normal text: AAA

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

Greyscale equivalent#1A1A1A

Inverted#99FBF0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#27230Eno red cones; affects about 1% of men; ΔE 43.6 from the original

Deuteranopia#3E370Ano green cones; the most common form, about 1% of men; ΔE 43.4 from the original

Tritanopia#71000Ano blue cones; rare, and affects men and women equally; ΔE 7.1 from the original

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

Contrast with white, large text13.21:1WCAG large text: AAA

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

Named colours

Maroon · ΔE 17.2 Brown · ΔE 21.2 Dark red · ΔE 22.1 Saddle brown · ΔE 28.2 Firebrick · ΔE 28.4 Sienna · ΔE 28.9

Nearest named CSS colourMaroon (#800000)ΔE 17.22, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04665B

Analogous#660440, #662A04

Triadic#0F6604, #040F66

Split complementary#04662A, #044066

Tetradic#406604, #04665B, #2A0466

Tints, shades & saturation

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

Lighter +40%#F73F53

Lighter +30%#F60D28

Lighter +20%#C8081D

Lighter +10%#970616

Darker −10%#350208

Darker −20%#040001

Darker −30%#000000

Darker −40%#000000

More saturated +25%#6A000C

Less saturated −25%#591119

Channel breakdown

R102

B15

Red102 (40%)

Green4 (1.6%)

Blue15 (5.9%)

Hue353.27°

Saturation (HSL)92.45%

Lightness20.78%

Dominant channelRed

Hex per channelR 66 · G 04 · B 0F

Keep nerding

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

#66040F

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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