Recognised as Colour
#AC1B03
- #AC1B03
- Red
- Dark
- Nearest: Firebrick
#AC1B03 is a red with RGB values 172, 27, 3 and HSL 9°, 97%, 34%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.
Colour values
#AC1B03#AC1B03
HEX#AC1B03
RGBrgb(172, 27, 3)
RGB (0–1)0.6745, 0.1059, 0.0118
RGB percentages67.5%, 10.6%, 1.2%
HSLhsl(8.5, 96.6%, 34.3%)
HSV / HSBhsv(8.5, 98.3%, 67.5%)
CMYK0%, 84.3%, 98.3%, 32.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer11,279,107
CSS custom property--colour: #AC1B03;
Brightness & contrast
Relative luminance0.09561WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.21:1
Contrast with white7.21:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#53E4FC
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.21:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0394AC
Analogous#AC033F, #AC7003
Triadic#03AC1B, #1B03AC
Split complementary#03AC70, #033FAC
Tetradic#3FAC03, #0394AC, #7003AC
Tints, shades & saturation
Channel breakdown
R172
G27
B3
Red172 (67.5%)
Green27 (10.6%)
Blue3 (1.2%)
Hue8.52°
Saturation (HSL)96.57%
Lightness34.31%
Dominant channelRed
Hex per channelR AC · G 1B · B 03
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page