Recognised as Colour

#660B25

#660B25
Red
Dark
Nearest: Brown

#660B25 is a red with RGB values 102, 11, 37 and HSL 343°, 81%, 22%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#660B25#660B25

HEX#660B25

RGBrgb(102, 11, 37)

RGB (0–1)0.4, 0.0431, 0.1451

RGB percentages40%, 4.3%, 14.5%

HSLhsl(342.9, 80.5%, 22.2%)

HSV / HSBhsv(342.9, 89.2%, 40%)

CMYK0%, 89.2%, 63.7%, 60%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,687,525

CSS custom property--colour: #660B25;

Brightness & contrast

Relative luminance0.03198WCAG 2.x, 0 is black and 1 is white

Perceived brightness57.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.81:1

Contrast with white12.81:1WCAG normal text: AAA

Contrast with black1.64:1WCAG normal text: Fail

Greyscale equivalent#202020

Inverted#99F4DA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#272625no red cones; affects about 1% of men; ΔE 40.9 from the original

Deuteranopia#3E3923no green cones; the most common form, about 1% of men; ΔE 41.7 from the original

Tritanopia#700017no blue cones; rare, and affects men and women equally; ΔE 12.6 from the original

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

Contrast with white, large text12.81:1WCAG large text: AAA

Contrast with black, large text1.64:1WCAG large text: Fail

Named colours

Brown · ΔE 28.2 Maroon · ΔE 29.4 Dark red · ΔE 33.9 Indian red · ΔE 35.1 Sienna · ΔE 35.8 Firebrick · ΔE 36.8

Nearest named CSS colourBrown (#A52A2A)ΔE 28.15, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B664C

Analogous#660B52, #661E0B

Triadic#25660B, #0B2566

Split complementary#0B661E, #0B5266

Tetradic#53660B, #0B664C, #1F0B66

Tints, shades & saturation

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

Lighter +40%#EC517D

Lighter +30%#E7235B

Lighter +20%#C21546

Lighter +10%#941036

Darker −10%#380614

Darker −20%#0A0104

Darker −30%#000000

Darker −40%#000000

More saturated +25%#710020

Less saturated −25%#58192B

Channel breakdown

R102

G11

B37

Red102 (40%)

Green11 (4.3%)

Blue37 (14.5%)

Hue342.86°

Saturation (HSL)80.53%

Lightness22.16%

Dominant channelRed

Hex per channelR 66 · G 0B · B 25

Keep nerding

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

#660B25

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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