Recognised as Colour

#8A0023

#8A0023
Red
Dark
Nearest: Brown

#8A0023 is a red with RGB values 138, 0, 35 and HSL 345°, 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 Brown.

Colour values

#8A0023#8A0023

HEX#8A0023

RGBrgb(138, 0, 35)

RGB (0–1)0.5412, 0, 0.1373

RGB percentages54.1%, 0%, 13.7%

HSLhsl(344.8, 100%, 27.1%)

HSV / HSBhsv(344.8, 100%, 54.1%)

CMYK0%, 100%, 74.6%, 45.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,044,003

CSS custom property--colour: #8A0023;

Brightness & contrast

Relative luminance0.05525WCAG 2.x, 0 is black and 1 is white

Perceived brightness76.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.98:1

Contrast with white9.98:1WCAG normal text: AAA

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

Greyscale equivalent#202020

Inverted#75FFDC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#353123no red cones; affects about 1% of men; ΔE 54.7 from the original

Deuteranopia#544C1Eno green cones; the most common form, about 1% of men; ΔE 55.3 from the original

Tritanopia#980013no blue cones; rare, and affects men and women equally; ΔE 14.5 from the original

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

Contrast with white, large text9.98:1WCAG large text: AAA

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

Named colours

Brown · ΔE 12.4 Maroon · ΔE 16 Dark red · ΔE 18.7 Firebrick · ΔE 19.1 Indian red · ΔE 26.1 Crimson · ΔE 29.1

Nearest named CSS colourBrown (#A52A2A)ΔE 12.39, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#008A67

Analogous#8A0068, #8A2200

Triadic#238A00, #00238A

Split complementary#008A22, #00688A

Tetradic#688A00, #008A67, #22008A

Tints, shades & saturation

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

Lighter +40%#FF5782

Lighter +30%#FF245C

Lighter +20%#F0003D

Lighter +10%#BD0030

Darker −10%#570016

Darker −20%#240009

Darker −30%#000000

Darker −40%#000000

More saturated +25%#8A0023

Less saturated −25%#79112B

Channel breakdown

R138

B35

Red138 (54.1%)

Green0 (0%)

Blue35 (13.7%)

Hue344.78°

Saturation (HSL)100%

Lightness27.06%

Dominant channelRed

Hex per channelR 8A · G 00 · B 23

Keep nerding

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#8A0023

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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