Recognised as Colour
#CA3941
- #CA3941
- Red
- Dark
- Nearest: Firebrick
#CA3941 is a red with RGB values 202, 57, 65 and HSL 357°, 58%, 51%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#CA3941#CA3941
HEX#CA3941
RGBrgb(202, 57, 65)
RGB (0–1)0.7922, 0.2235, 0.2549
RGB percentages79.2%, 22.4%, 25.5%
HSLhsl(356.7, 57.8%, 50.8%)
HSV / HSBhsv(356.7, 71.8%, 79.2%)
CMYK0%, 71.8%, 67.8%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,252,929
CSS custom property--colour: #CA3941;
Brightness & contrast
Relative luminance0.15864WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.03:1
Contrast with white5.03:1WCAG normal text: AA
Contrast with black4.17:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#35C6BE
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.03:1WCAG large text: AAA
Contrast with black, large text4.17:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#39CAC2
Analogous#CA398A, #CA7939
Triadic#41CA39, #3941CA
Split complementary#39CA79, #398ACA
Tetradic#8ACA39, #39CAC2, #7939CA
Tints, shades & saturation
Channel breakdown
R202
G57
B65
Red202 (79.2%)
Green57 (22.4%)
Blue65 (25.5%)
Hue356.69°
Saturation (HSL)57.77%
Lightness50.78%
Dominant channelRed
Hex per channelR CA · G 39 · B 41
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Also reads as
Ca3941 (chemical formula)
- Formula
- 157,947.398 g/mol
- 3941 atoms
Ca3941 has a molar mass of 157,947.398 g/mol, made up of 3941 atoms across 1 element: 3941 × Ca.
Molar mass
Molar mass157,947.398 g/mol
Total atoms per molecule3941
Distinct elements1
Mass of one molecule2.6227782 × 10^-19 g
Molecules per gram3.8127509 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
Ca100%
Calcium (Ca × 3941)157,947.398 g/mol, 100%
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