Colour

#8A0400

#8A0400
Red
Dark
Nearest: Dark red

#8A0400 is a red with RGB values 138, 4, 0 and HSL 2°, 100%, 27%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#8A0400#8A0400

HEX#8A0400

RGBrgb(138, 4, 0)

RGB (0–1)0.5412, 0.0157, 0

RGB percentages54.1%, 1.6%, 0%

HSLhsl(1.7, 100%, 27.1%)

HSV / HSBhsv(1.7, 100%, 54.1%)

CMYK0%, 97.1%, 100%, 45.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,044,992

CSS custom property--colour: #8A0400;

Brightness & contrast

Relative luminance0.0549WCAG 2.x, 0 is black and 1 is white

Perceived brightness75.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 10.01:1

Contrast with white10.01:1WCAG normal text: AAA

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

Greyscale equivalent#202020

Inverted#75FBFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#383000no red cones; affects about 1% of men; ΔE 54.5 from the original

Deuteranopia#574C00no green cones; the most common form, about 1% of men; ΔE 53.6 from the original

Tritanopia#990007no blue cones; rare, and affects men and women equally; ΔE 5.8 from the original

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

Contrast with white, large text10.01:1WCAG large text: AAA

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

Named colours

Dark red · ΔE 0.9 Maroon · ΔE 4.5 Firebrick · ΔE 13 Brown · ΔE 14.2 Saddle brown · ΔE 25.4 Sienna · ΔE 26.6

Nearest named CSS colourDark red (#8B0000)ΔE 0.95, indistinguishable to the eye

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00868A

Analogous#8A0041, #8A4900

Triadic#008A04, #04008A

Split complementary#008A49, #00418A

Tetradic#418A00, #00868A, #49008A

Tints, shades & saturation

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

Lighter +40%#FF5C57

Lighter +30%#FF2A24

Lighter +20%#F00700

Lighter +10%#BD0500

Darker −10%#570300

Darker −20%#240100

Darker −30%#000000

Darker −40%#000000

More saturated +25%#8A0400

Less saturated −25%#791411

Channel breakdown

R138

Red138 (54.1%)

Green4 (1.6%)

Blue0 (0%)

Hue1.74°

Saturation (HSL)100%

Lightness27.06%

Dominant channelRed

Hex per channelR 8A · G 04 · B 00

Keep nerding

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#8A0400

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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