Recognised as Colour

#A6370A

#A6370A
Orange
Dark
Nearest: Dark red

#A6370A is a orange with RGB values 166, 55, 10 and HSL 17°, 89%, 35%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark red.

Colour values

#A6370A#A6370A

HEX#A6370A

RGBrgb(166, 55, 10)

RGB (0–1)0.651, 0.2157, 0.0392

RGB percentages65.1%, 21.6%, 3.9%

HSLhsl(17.3, 88.6%, 34.5%)

HSV / HSBhsv(17.3, 94%, 65.1%)

CMYK0%, 66.9%, 94%, 34.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,893,066

CSS custom property--colour: #A6370A;

Brightness & contrast

Relative luminance0.10861WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.62:1

Contrast with white6.62:1WCAG normal text: AA

Contrast with black3.17:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#59C8F5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#584D00no red cones; affects about 1% of men; ΔE 48.3 from the original

Deuteranopia#736600no green cones; the most common form, about 1% of men; ΔE 48.8 from the original

Tritanopia#B71230no blue cones; rare, and affects men and women equally; ΔE 25 from the original

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

Contrast with white, large text6.62:1WCAG large text: AAA

Contrast with black, large text3.17:1WCAG large text: AA

Named colours

Dark red · ΔE 14.7 Firebrick · ΔE 15.6 Maroon · ΔE 17.3 Brown · ΔE 18.2 Saddle brown · ΔE 18.8 Sienna · ΔE 19.5

Nearest named CSS colourDark red (#8B0000)ΔE 14.74, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0A79A6

Analogous#A60A2B, #A6850A

Triadic#0AA637, #370AA6

Split complementary#0AA685, #0A2BA6

Tetradic#2BA60A, #0A79A6, #850AA6

Tints, shades & saturation

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

Lighter +40%#F8A684

Lighter +30%#F58354

Lighter +20%#F26024

Lighter +10%#D6470D

Darker −10%#762707

Darker −20%#461704

Darker −30%#160701

Darker −40%#000000

More saturated +25%#B03300

Less saturated −25%#904020

Channel breakdown

R166

G55

B10

Red166 (65.1%)

Green55 (21.6%)

Blue10 (3.9%)

Hue17.31°

Saturation (HSL)88.64%

Lightness34.51%

Dominant channelRed

Hex per channelR A6 · G 37 · B 0A

Keep nerding

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

#A6370A

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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