Recognised as Colour

#A8173D

#A8173D
Red
Dark
Nearest: Brown

#A8173D is a red with RGB values 168, 23, 61 and HSL 344°, 76%, 37%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A8173D#A8173D

HEX#A8173D

RGBrgb(168, 23, 61)

RGB (0–1)0.6588, 0.0902, 0.2392

RGB percentages65.9%, 9%, 23.9%

HSLhsl(344.3, 75.9%, 37.5%)

HSV / HSBhsv(344.3, 86.3%, 65.9%)

CMYK0%, 86.3%, 63.7%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,015,997

CSS custom property--colour: #A8173D;

Brightness & contrast

Relative luminance0.09275WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.36:1

Contrast with white7.36:1WCAG normal text: AAA

Contrast with black2.85:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#57E8C2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#45433Dno red cones; affects about 1% of men; ΔE 59.6 from the original

Deuteranopia#696039no green cones; the most common form, about 1% of men; ΔE 60 from the original

Tritanopia#B90029no blue cones; rare, and affects men and women equally; ΔE 17.5 from the original

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

Contrast with white, large text7.36:1WCAG large text: AAA

Contrast with black, large text2.85:1WCAG large text: Fail

Named colours

Brown · ΔE 15 Firebrick · ΔE 20.3 Indian red · ΔE 21.3 Crimson · ΔE 23.7 Maroon · ΔE 24.9 Dark red · ΔE 25.9

Nearest named CSS colourBrown (#A52A2A)ΔE 14.95, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17A882

Analogous#A81785, #A83A17

Triadic#3DA817, #173DA8

Split complementary#17A839, #1785A8

Tetradic#85A817, #17A882, #3A17A8

Tints, shades & saturation

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

Lighter +40%#F19AB1

Lighter +30%#EB6D8E

Lighter +20%#E5406B

Lighter +10%#D51D4D

Darker −10%#7B112D

Darker −20%#4E0B1C

Darker −30%#21050C

Darker −40%#000000

More saturated +25%#BF0032

Less saturated −25%#902F48

Channel breakdown

R168

G23

B61

Red168 (65.9%)

Green23 (9%)

Blue61 (23.9%)

Hue344.28°

Saturation (HSL)75.92%

Lightness37.45%

Dominant channelRed

Hex per channelR A8 · G 17 · B 3D

Keep nerding

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

#A8173D

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