Colour

#A42917

#A42917
Red
Dark
Nearest: Firebrick

#A42917 is a red with RGB values 164, 41, 23 and HSL 8°, 75%, 37%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A42917#A42917

HEX#A42917

RGBrgb(164, 41, 23)

RGB (0–1)0.6431, 0.1608, 0.0902

RGB percentages64.3%, 16.1%, 9%

HSLhsl(7.7, 75.4%, 36.7%)

HSV / HSBhsv(7.7, 86%, 64.3%)

CMYK0%, 75%, 86%, 35.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,758,423

CSS custom property--colour: #A42917;

Brightness & contrast

Relative luminance0.0954WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.22:1

Contrast with white7.22:1WCAG normal text: AAA

Contrast with black2.91:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#5BD6E8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4F4613no red cones; affects about 1% of men; ΔE 53.4 from the original

Deuteranopia#6D610Fno green cones; the most common form, about 1% of men; ΔE 53.6 from the original

Tritanopia#B50026no blue cones; rare, and affects men and women equally; ΔE 15 from the original

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

Contrast with white, large text7.22:1WCAG large text: AAA

Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Firebrick · ΔE 7.7 Dark red · ΔE 9.2 Brown · ΔE 10 Maroon · ΔE 11.8 Sienna · ΔE 21.4 Saddle brown · ΔE 22.6

Nearest named CSS colourFirebrick (#B22222)ΔE 7.7, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1792A4

Analogous#A4174C, #A47017

Triadic#17A429, #2917A4

Split complementary#17A470, #174CA4

Tetradic#4BA417, #1792A4, #7017A4

Tints, shades & saturation

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

Lighter +40%#F0A297

Lighter +30%#EA7A6A

Lighter +20%#E4523D

Lighter +10%#D1341D

Darker −10%#771E11

Darker −20%#4B130A

Darker −30%#1E0704

Darker −40%#000000

More saturated +25%#BB1800

Less saturated −25%#8D3A2E

Channel breakdown

R164

G41

B23

Red164 (64.3%)

Green41 (16.1%)

Blue23 (9%)

Hue7.66°

Saturation (HSL)75.4%

Lightness36.67%

Dominant channelRed

Hex per channelR A4 · G 29 · B 17

Keep nerding

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

#A42917

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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