Colour

#AA1004

#AA1004
Red
Dark
Nearest: Firebrick

#AA1004 is a red with RGB values 170, 16, 4 and HSL 4°, 95%, 34%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#AA1004#AA1004

HEX#AA1004

RGBrgb(170, 16, 4)

RGB (0–1)0.6667, 0.0627, 0.0157

RGB percentages66.7%, 6.3%, 1.6%

HSLhsl(4.3, 95.4%, 34.1%)

HSV / HSBhsv(4.3, 97.6%, 66.7%)

CMYK0%, 90.6%, 97.6%, 33.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,145,220

CSS custom property--colour: #AA1004;

Brightness & contrast

Relative luminance0.08925WCAG 2.x, 0 is black and 1 is white

Perceived brightness93.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.54:1

Contrast with white7.54:1WCAG normal text: AAA

Contrast with black2.79:1WCAG normal text: Fail

Greyscale equivalent#303030

Inverted#55EFFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#493F00no red cones; affects about 1% of men; ΔE 61.7 from the original

Deuteranopia#6D6000no green cones; the most common form, about 1% of men; ΔE 61.4 from the original

Tritanopia#BC0012no blue cones; rare, and affects men and women equally; ΔE 7.7 from the original

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

Contrast with white, large text7.54:1WCAG large text: AAA

Contrast with black, large text2.79:1WCAG large text: Fail

Named colours

Firebrick · ΔE 11.1 Dark red · ΔE 12 Maroon · ΔE 17 Brown · ΔE 19.2 Crimson · ΔE 23 Tomato · ΔE 26.4

Nearest named CSS colourFirebrick (#B22222)ΔE 11.06, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#049EAA

Analogous#AA044B, #AA6304

Triadic#04AA10, #1004AA

Split complementary#04AA63, #044BAA

Tetradic#4BAA04, #049EAA, #6304AA

Tints, shades & saturation

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

Lighter +40%#FC877E

Lighter +30%#FB594C

Lighter +20%#FA2B1A

Lighter +10%#DC1505

Darker −10%#780B03

Darker −20%#460702

Darker −30%#150200

Darker −40%#000000

More saturated +25%#AE0D00

Less saturated −25%#94231A

Channel breakdown

R170

G16

Red170 (66.7%)

Green16 (6.3%)

Blue4 (1.6%)

Hue4.34°

Saturation (HSL)95.4%

Lightness34.12%

Dominant channelRed

Hex per channelR AA · G 10 · B 04

Keep nerding

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#AA1004

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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