Colour

#40020A

#40020A
Red
Dark
Nearest: Black

#40020A is a red with RGB values 64, 2, 10 and HSL 352°, 94%, 13%. It is a dark colour, so white text on it reaches 17.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#40020A#40020A

HEX#40020A

RGBrgb(64, 2, 10)

RGB (0–1)0.251, 0.0078, 0.0392

RGB percentages25.1%, 0.8%, 3.9%

HSLhsl(352.3, 93.9%, 12.9%)

HSV / HSBhsv(352.3, 96.9%, 25.1%)

CMYK0%, 96.9%, 84.4%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,194,826

CSS custom property--colour: #40020A;

Brightness & contrast

Relative luminance0.01155WCAG 2.x, 0 is black and 1 is white

Perceived brightness35.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.06:1

Contrast with white17.06:1WCAG normal text: AAA

Contrast with black1.23:1WCAG normal text: Fail

Greyscale equivalent#101010

Inverted#BFFDF5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#16130Ano red cones; affects about 1% of men; ΔE 30.7 from the original

Deuteranopia#252108no green cones; the most common form, about 1% of men; ΔE 31.7 from the original

Tritanopia#470005no blue cones; rare, and affects men and women equally; ΔE 5.3 from the original

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

Contrast with white, large text17.06:1WCAG large text: AAA

Contrast with black, large text1.23:1WCAG large text: Fail

Named colours

Black · ΔE 33.2 Maroon · ΔE 35.6 Brown · ΔE 38.8 Saddle brown · ΔE 39.9 Dark red · ΔE 40.6 Sienna · ΔE 41.1

Nearest named CSS colourBlack (#000000)ΔE 33.23, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#024038

Analogous#400229, #401902

Triadic#0A4002, #020A40

Split complementary#024019, #022940

Tetradic#294002, #024038, #190240

Tints, shades & saturation

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

Lighter +40%#F81633

Lighter +30%#D40721

Lighter +20%#A30519

Lighter +10%#710412

Darker −10%#0F0002

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#420009

Less saturated −25%#380A10

Channel breakdown

R64

B10

Red64 (25.1%)

Green2 (0.8%)

Blue10 (3.9%)

Hue352.26°

Saturation (HSL)93.94%

Lightness12.94%

Dominant channelRed

Hex per channelR 40 · G 02 · B 0A

Keep nerding

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

#40020A

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