Colour

#97180A

#97180A
Red
Dark
Nearest: Dark red

#97180A is a red with RGB values 151, 24, 10 and HSL 6°, 88%, 32%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#97180A#97180A

HEX#97180A

RGBrgb(151, 24, 10)

RGB (0–1)0.5922, 0.0941, 0.0392

RGB percentages59.2%, 9.4%, 3.9%

HSLhsl(6, 87.6%, 31.6%)

HSV / HSBhsv(6, 93.4%, 59.2%)

CMYK0%, 84.1%, 93.4%, 40.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer9,902,090

CSS custom property--colour: #97180A;

Brightness & contrast

Relative luminance0.07254WCAG 2.x, 0 is black and 1 is white

Perceived brightness84.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.57:1

Contrast with white8.57:1WCAG normal text: AAA

Contrast with black2.45:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#68E7F5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#433A05no red cones; affects about 1% of men; ΔE 54 from the original

Deuteranopia#625600no green cones; the most common form, about 1% of men; ΔE 54 from the original

Tritanopia#A70017no blue cones; rare, and affects men and women equally; ΔE 9.4 from the original

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

Contrast with white, large text8.57:1WCAG large text: AAA

Contrast with black, large text2.45:1WCAG large text: Fail

Named colours

Dark red · ΔE 4.4 Maroon · ΔE 8 Firebrick · ΔE 9.8 Brown · ΔE 12.2 Saddle brown · ΔE 24.1 Sienna · ΔE 24.4

Nearest named CSS colourDark red (#8B0000)ΔE 4.42, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0A8997

Analogous#970A42, #975F0A

Triadic#0A9718, #180A97

Split complementary#0A975F, #0A4297

Tetradic#42970A, #0A8997, #5F0A97

Tints, shades & saturation

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

Lighter +40%#F68477

Lighter +30%#F35847

Lighter +20%#F02D17

Lighter +10%#C7200D

Darker −10%#671007

Darker −20%#370904

Darker −30%#080100

Darker −40%#000000

More saturated +25%#A11000

Less saturated −25%#83281E

Channel breakdown

R151

G24

B10

Red151 (59.2%)

Green24 (9.4%)

Blue10 (3.9%)

Hue5.96°

Saturation (HSL)87.58%

Lightness31.57%

Dominant channelRed

Hex per channelR 97 · G 18 · B 0A

Keep nerding

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#97180A

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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