Recognised as Colour
#C31A09
- #C31A09
- Red
- Dark
- Nearest: Firebrick
#C31A09 is a red with RGB values 195, 26, 9 and HSL 5°, 91%, 40%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#C31A09#C31A09
HEX#C31A09
RGBrgb(195, 26, 9)
RGB (0–1)0.7647, 0.102, 0.0353
RGB percentages76.5%, 10.2%, 3.5%
HSLhsl(5.5, 91.2%, 40%)
HSV / HSBhsv(5.5, 95.4%, 76.5%)
CMYK0%, 86.7%, 95.4%, 23.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,786,185
CSS custom property--colour: #C31A09;
Brightness & contrast
Relative luminance0.12361WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.05:1
Contrast with white6.05:1WCAG normal text: AA
Contrast with black3.47:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#3CE5F6
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.05:1WCAG large text: AAA
Contrast with black, large text3.47:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#09B2C3
Analogous#C30955, #C37709
Triadic#09C31A, #1A09C3
Split complementary#09C377, #0955C3
Tetradic#55C309, #09B2C3, #7709C3
Tints, shades & saturation
Channel breakdown
R195
G26
B9
Red195 (76.5%)
Green26 (10.2%)
Blue9 (3.5%)
Hue5.48°
Saturation (HSL)91.18%
Lightness40%
Dominant channelRed
Hex per channelR C3 · G 1A · B 09
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