Colour

#A8001E

#A8001E
Red
Dark
Nearest: Firebrick

#A8001E is a red with RGB values 168, 0, 30 and HSL 349°, 100%, 33%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A8001E#A8001E

HEX#A8001E

RGBrgb(168, 0, 30)

RGB (0–1)0.6588, 0, 0.1176

RGB percentages65.9%, 0%, 11.8%

HSLhsl(349.3, 100%, 32.9%)

HSV / HSBhsv(349.3, 100%, 65.9%)

CMYK0%, 100%, 82.1%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,010,078

CSS custom property--colour: #A8001E;

Brightness & contrast

Relative luminance0.08419WCAG 2.x, 0 is black and 1 is white

Perceived brightness92.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.82:1

Contrast with white7.82:1WCAG normal text: AAA

Contrast with black2.68:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#57FFE1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#443D1Dno red cones; affects about 1% of men; ΔE 63.5 from the original

Deuteranopia#695D16no green cones; the most common form, about 1% of men; ΔE 63.1 from the original

Tritanopia#BA0011no blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text7.82:1WCAG large text: AAA

Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Firebrick · ΔE 6 Brown · ΔE 10.8 Dark red · ΔE 12.3 Maroon · ΔE 14.8 Crimson · ΔE 17 Indian red · ΔE 26.7

Nearest named CSS colourFirebrick (#B22222)ΔE 5.97, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A88A

Analogous#A80072, #A83600

Triadic#1EA800, #001EA8

Split complementary#00A836, #0072A8

Tetradic#72A800, #00A88A, #3600A8

Tints, shades & saturation

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

Lighter +40%#FF758E

Lighter +30%#FF4264

Lighter +20%#FF0F3A

Lighter +10%#DB0027

Darker −10%#750015

Darker −20%#42000C

Darker −30%#0F0003

Darker −40%#000000

More saturated +25%#A8001E

Less saturated −25%#93152C

Channel breakdown

R168

B30

Red168 (65.9%)

Green0 (0%)

Blue30 (11.8%)

Hue349.29°

Saturation (HSL)100%

Lightness32.94%

Dominant channelRed

Hex per channelR A8 · G 00 · B 1E

Keep nerding

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

#A8001E

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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