Recognised as Colour
#A40D25
- #A40D25
- Red
- Dark
- Nearest: Brown
#A40D25 is a red with RGB values 164, 13, 37 and HSL 350°, 85%, 35%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Brown.
Colour values
#A40D25#A40D25
HEX#A40D25
RGBrgb(164, 13, 37)
RGB (0–1)0.6431, 0.051, 0.1451
RGB percentages64.3%, 5.1%, 14.5%
HSLhsl(350.5, 85.3%, 34.7%)
HSV / HSBhsv(350.5, 92.1%, 64.3%)
CMYK0%, 92.1%, 77.4%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,751,269
CSS custom property--colour: #A40D25;
Brightness & contrast
Relative luminance0.08314WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.89:1
Contrast with white7.89:1WCAG normal text: AAA
Contrast with black2.66:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#5BF2DA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.89:1WCAG large text: AAA
Contrast with black, large text2.66:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0DA48C
Analogous#A40D70, #A4410D
Triadic#25A40D, #0D25A4
Split complementary#0DA440, #0D70A4
Tetradic#71A40D, #0DA48C, #410DA4
Tints, shades & saturation
Channel breakdown
R164
G13
B37
Red164 (64.3%)
Green13 (5.1%)
Blue37 (14.5%)
Hue350.46°
Saturation (HSL)85.31%
Lightness34.71%
Dominant channelRed
Hex per channelR A4 · G 0D · B 25
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