Recognised as Colour
#A40F04
- #A40F04
- Red
- Dark
- Nearest: Dark red
#A40F04 is a red with RGB values 164, 15, 4 and HSL 4°, 95%, 33%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark red.
Colour values
#A40F04#A40F04
HEX#A40F04
RGBrgb(164, 15, 4)
RGB (0–1)0.6431, 0.0588, 0.0157
RGB percentages64.3%, 5.9%, 1.6%
HSLhsl(4.1, 95.2%, 32.9%)
HSV / HSBhsv(4.1, 97.6%, 64.3%)
CMYK0%, 90.9%, 97.6%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,751,748
CSS custom property--colour: #A40F04;
Brightness & contrast
Relative luminance0.08243WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.93:1
Contrast with white7.93:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#2E2E2E
Inverted#5BF0FB
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.93:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0499A4
Analogous#A40449, #A45F04
Triadic#04A40F, #0F04A4
Split complementary#04A45F, #0449A4
Tetradic#49A404, #0499A4, #5F04A4
Tints, shades & saturation
Channel breakdown
R164
G15
B4
Red164 (64.3%)
Green15 (5.9%)
Blue4 (1.6%)
Hue4.13°
Saturation (HSL)95.24%
Lightness32.94%
Dominant channelRed
Hex per channelR A4 · G 0F · B 04
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